77900503600 has 120 divisors (see below), whose sum is σ = 189077518800. Its totient is φ = 30841896960.

The previous prime is 77900503579. The next prime is 77900503609. The reversal of 77900503600 is 630500977.

It is a super-2 number, since 2×77900503600² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77900503600.

It is not an unprimeable number, because it can be changed into a prime (77900503609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16754076 + ... + 16758724.

It is an arithmetic number, because the mean of its divisors is an integer number (1575645990).

Almost surely, 2^77900503600 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 77900503600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94538759400).

77900503600 is an abundant number, since it is smaller than the sum of its proper divisors (111177015200).

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

77900503600 is a wasteful number, since it uses less digits than its factorization.

77900503600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5087 (or 5076 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 37.

The spelling of 77900503600 in words is "seventy-seven billion, nine hundred million, five hundred three thousand, six hundred".