77611000000 has 98 divisors (see below), whose sum is σ = 192511676444. Its totient is φ = 31044000000.

The previous prime is 77610999953. The next prime is 77611000021. The reversal of 77611000000 is 11677.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 961195 + ... + 1038805.

Almost surely, 2^77611000000 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 77611000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96255838222).

77611000000 is an abundant number, since it is smaller than the sum of its proper divisors (114900676444).

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

77611000000 is an frugal number, since it uses more digits than its factorization.

77611000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77653 (or 77618 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 22.

Adding to 77611000000 its reverse (11677), we get a palindrome (77611011677).

The spelling of 77611000000 in words is "seventy-seven billion, six hundred eleven million", and thus it is an aban number.