83557272552 has 128 divisors (see below), whose sum is σ = 226835064960. Its totient is φ = 25496570880.

The previous prime is 83557272527. The next prime is 83557272587. The reversal of 83557272552 is 25527275538.

It is a junction number, because it is equal to n+sod(n) for n = 83557272495 and 83557272504.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27511578 + ... + 27514614.

It is an arithmetic number, because the mean of its divisors is an integer number (1772148945).

Almost surely, 2^83557272552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83557272552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113417532480).

83557272552 is an abundant number, since it is smaller than the sum of its proper divisors (143277792408).

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

83557272552 is a wasteful number, since it uses less digits than its factorization.

83557272552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3763 (or 3759 counting only the distinct ones).

The product of its digits is 5880000, while the sum is 51.

The spelling of 83557272552 in words is "eighty-three billion, five hundred fifty-seven million, two hundred seventy-two thousand, five hundred fifty-two".