781932372012 has 72 divisors (see below), whose sum is σ = 2160109525392. Its totient is φ = 236523734400.

The previous prime is 781932372007. The next prime is 781932372017. The reversal of 781932372012 is 210273239187.

It is an interprime number because it is at equal distance from previous prime (781932372007) and next prime (781932372017).

It is a super-2 number, since 2×781932372012² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (781932372017) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1551939 + ... + 1993082.

It is an arithmetic number, because the mean of its divisors is an integer number (30001521186).

Almost surely, 2^781932372012 is an apocalyptic number.

It is an amenable number.

781932372012 is an abundant number, since it is smaller than the sum of its proper divisors (1378177153380).

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

781932372012 is a wasteful number, since it uses less digits than its factorization.

781932372012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3545599 (or 3545594 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 781932372012 in words is "seven hundred eighty-one billion, nine hundred thirty-two million, three hundred seventy-two thousand, twelve".