78515056153 has 4 divisors (see below), whose sum is σ = 78671150208. Its totient is φ = 78358962100.

The previous prime is 78515056079. The next prime is 78515056159. The reversal of 78515056153 is 35165051587.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78515056153 - 2³³ = 69925121561 is a prime.

It is a super-2 number, since 2×78515056153² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78515056159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78046273 + ... + 78047278.

It is an arithmetic number, because the mean of its divisors is an integer number (19667787552).

Almost surely, 2^78515056153 is an apocalyptic number.

It is an amenable number.

78515056153 is a deficient number, since it is larger than the sum of its proper divisors (156094055).

78515056153 is a wasteful number, since it uses less digits than its factorization.

78515056153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156094054.

The product of its (nonzero) digits is 630000, while the sum is 46.

The spelling of 78515056153 in words is "seventy-eight billion, five hundred fifteen million, fifty-six thousand, one hundred fifty-three".