191433033648 has 120 divisors (see below), whose sum is σ = 561483393120. Its totient is φ = 60769843200.

The previous prime is 191433033593. The next prime is 191433033709. The reversal of 191433033648 is 846330334191.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 632248 + ... + 884648.

It is an arithmetic number, because the mean of its divisors is an integer number (4679028276).

Almost surely, 2^191433033648 is an apocalyptic number.

191433033648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191433033648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280741696560).

191433033648 is an abundant number, since it is smaller than the sum of its proper divisors (370050359472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191433033648 is a wasteful number, since it uses less digits than its factorization.

191433033648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252667 (or 252658 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 191433033648 in words is "one hundred ninety-one billion, four hundred thirty-three million, thirty-three thousand, six hundred forty-eight".