40692764538 has 24 divisors (see below), whose sum is σ = 88193207700. Its totient is φ = 13560323904.

The previous prime is 40692764509. The next prime is 40692764549. The reversal of 40692764538 is 83546729604.

40692764538 is a `hidden beast` number, since 40 + 6 + 9 + 2 + 7 + 64 + 538 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27303266169 + 13389498369 = 165237^2 + 115713^2 .

It is a super-2 number, since 2×40692764538² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 263403 + ... + 388286.

Almost surely, 2^40692764538 is an apocalyptic number.

40692764538 is an abundant number, since it is smaller than the sum of its proper divisors (47500443162).

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

40692764538 is a wasteful number, since it uses less digits than its factorization.

40692764538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655166 (or 655163 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 40692764538 in words is "forty billion, six hundred ninety-two million, seven hundred sixty-four thousand, five hundred thirty-eight".