81753609354 has 16 divisors (see below), whose sum is σ = 163857346848. Its totient is φ = 27192848432.

The previous prime is 81753609313. The next prime is 81753609373. The reversal of 81753609354 is 45390635718.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 81753609297 and 81753609306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14585637 + ... + 14591240.

It is an arithmetic number, because the mean of its divisors is an integer number (10241084178).

Almost surely, 2^81753609354 is an apocalyptic number.

81753609354 is an abundant number, since it is smaller than the sum of its proper divisors (82103737494).

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

81753609354 is a wasteful number, since it uses less digits than its factorization.

81753609354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29177349.

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 81753609354 in words is "eighty-one billion, seven hundred fifty-three million, six hundred nine thousand, three hundred fifty-four".