772640487632 has 40 divisors (see below), whose sum is σ = 1617229860456. Its totient is φ = 355478340096.

The previous prime is 772640487631. The next prime is 772640487727. The reversal of 772640487632 is 236784046277.

It can be written as a sum of positive squares in 4 ways, for example, as 29879196736 + 742761290896 = 172856^2 + 861836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772640487631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5793083 + ... + 5924954.

Almost surely, 2^772640487632 is an apocalyptic number.

It is an amenable number.

772640487632 is an abundant number, since it is smaller than the sum of its proper divisors (844589372824).

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

772640487632 is a wasteful number, since it uses less digits than its factorization.

772640487632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11718375 (or 11718369 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 56.

The spelling of 772640487632 in words is "seven hundred seventy-two billion, six hundred forty million, four hundred eighty-seven thousand, six hundred thirty-two".