1621146303624 has 32 divisors (see below), whose sum is σ = 4291269628320. Its totient is φ = 508594918656.

The previous prime is 1621146303617. The next prime is 1621146303649. The reversal of 1621146303624 is 4263036411261.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1986698494 + ... + 1986699309.

It is an arithmetic number, because the mean of its divisors is an integer number (134102175885).

Almost surely, 2^{1621146303624} is an apocalyptic number.

It is an amenable number.

1621146303624 is an abundant number, since it is smaller than the sum of its proper divisors (2670123324696).

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

1621146303624 is a wasteful number, since it uses less digits than its factorization.

1621146303624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3973397829 (or 3973397825 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 1621146303624 in words is "one trillion, six hundred twenty-one billion, one hundred forty-six million, three hundred three thousand, six hundred twenty-four".