77634265632 has 144 divisors (see below), whose sum is σ = 258613018272. Its totient is φ = 20164730880.

The previous prime is 77634265567. The next prime is 77634265637. The reversal of 77634265632 is 23656243677.

It is not an unprimeable number, because it can be changed into a prime (77634265637) 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, 698433 + ... + 801920.

It is an arithmetic number, because the mean of its divisors is an integer number (1795923738).

Almost surely, 2^77634265632 is an apocalyptic number.

It is an amenable number.

77634265632 is an abundant number, since it is smaller than the sum of its proper divisors (180978752640).

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

77634265632 is a wasteful number, since it uses less digits than its factorization.

77634265632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500391 (or 1500376 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 51.

The spelling of 77634265632 in words is "seventy-seven billion, six hundred thirty-four million, two hundred sixty-five thousand, six hundred thirty-two".