78151687444412 has 24 divisors (see below), whose sum is σ = 137727653100576. Its totient is φ = 38801892339648.

The previous prime is 78151687444409. The next prime is 78151687444421. The reversal of 78151687444412 is 21444478615187.

It is a super-2 number, since 2×78151687444412² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120040568 + ... + 120689855.

It is an arithmetic number, because the mean of its divisors is an integer number (5738652212524).

Almost surely, 2^{78151687444412} is an apocalyptic number.

It is an amenable number.

78151687444412 is a deficient number, since it is larger than the sum of its proper divisors (59575965656164).

78151687444412 is a wasteful number, since it uses less digits than its factorization.

78151687444412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240730997 (or 240730995 counting only the distinct ones).

The product of its digits is 48168960, while the sum is 62.

The spelling of 78151687444412 in words is "seventy-eight trillion, one hundred fifty-one billion, six hundred eighty-seven million, four hundred forty-four thousand, four hundred twelve".