10977644640 has 48 divisors (see below), whose sum is σ = 34579582128. Its totient is φ = 2927371776.

The previous prime is 10977644621. The next prime is 10977644683. The reversal of 10977644640 is 4644677901.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 10977644640.

It is a congruent number.

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, 11434567 + ... + 11435526.

It is an arithmetic number, because the mean of its divisors is an integer number (720407961).

Almost surely, 2^10977644640 is an apocalyptic number.

10977644640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10977644640 is an abundant number, since it is smaller than the sum of its proper divisors (23601937488).

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

10977644640 is a wasteful number, since it uses less digits than its factorization.

10977644640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22870111 (or 22870103 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 10977644640 in words is "ten billion, nine hundred seventy-seven million, six hundred forty-four thousand, six hundred forty".