40079772500 has 30 divisors (see below), whose sum is σ = 87646451970. Its totient is φ = 16031908000.

The previous prime is 40079772479. The next prime is 40079772529. The reversal of 40079772500 is 527797004.

It can be written as a sum of positive squares in 5 ways, for example, as 26789832976 + 13289939524 = 163676^2 + 115282^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8013455 + ... + 8018454.

It is an arithmetic number, because the mean of its divisors is an integer number (2921548399).

Almost surely, 2^40079772500 is an apocalyptic number.

It is an amenable number.

40079772500 is an abundant number, since it is smaller than the sum of its proper divisors (47566679470).

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

40079772500 is a wasteful number, since it uses less digits than its factorization.

40079772500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16031933 (or 16031916 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 41.

The spelling of 40079772500 in words is "forty billion, seventy-nine million, seven hundred seventy-two thousand, five hundred".