78151534516 has 24 divisors (see below), whose sum is σ = 149257130400. Its totient is φ = 35509437600.

The previous prime is 78151534441. The next prime is 78151534519. The reversal of 78151534516 is 61543515187.

It is a super-2 number, since 2×78151534516² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78151534519) 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 7 ways as a sum of consecutive naturals, for example, 236250 + ... + 460561.

It is an arithmetic number, because the mean of its divisors is an integer number (6219047100).

Almost surely, 2^78151534516 is an apocalyptic number.

It is an amenable number.

78151534516 is a deficient number, since it is larger than the sum of its proper divisors (71105595884).

78151534516 is a wasteful number, since it uses less digits than its factorization.

78151534516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699375 (or 699373 counting only the distinct ones).

The product of its digits is 504000, while the sum is 46.

The spelling of 78151534516 in words is "seventy-eight billion, one hundred fifty-one million, five hundred thirty-four thousand, five hundred sixteen".