40402016512 has 72 divisors (see below), whose sum is σ = 94745286720. Its totient is φ = 16951879680.

The previous prime is 40402016509. The next prime is 40402016521. The reversal of 40402016512 is 21561020404.

It is a happy number.

It is a super-2 number, since 2×40402016512² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515212 + ... + 588427.

It is an arithmetic number, because the mean of its divisors is an integer number (1315906760).

Almost surely, 2^40402016512 is an apocalyptic number.

It is an amenable number.

40402016512 is an abundant number, since it is smaller than the sum of its proper divisors (54343270208).

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

40402016512 is a wasteful number, since it uses less digits than its factorization.

40402016512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103679 (or 1103665 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 40402016512 its reverse (21561020404), we get a palindrome (61963036916).

The spelling of 40402016512 in words is "forty billion, four hundred two million, sixteen thousand, five hundred twelve".