40387018836 has 48 divisors (see below), whose sum is σ = 95836727168. Its totient is φ = 13233974400.

The previous prime is 40387018823. The next prime is 40387018883. The reversal of 40387018836 is 63881078304.

It is a super-2 number, since 2×40387018836² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1325226 + ... + 1355358.

Almost surely, 2^40387018836 is an apocalyptic number.

It is an amenable number.

40387018836 is an abundant number, since it is smaller than the sum of its proper divisors (55449708332).

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

40387018836 is a wasteful number, since it uses less digits than its factorization.

40387018836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32032 (or 32030 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 40387018836 in words is "forty billion, three hundred eighty-seven million, eighteen thousand, eight hundred thirty-six".