78090051296 has 48 divisors (see below), whose sum is σ = 155111695200. Its totient is φ = 38697761280.

The previous prime is 78090051287. The next prime is 78090051317. The reversal of 78090051296 is 69215009087.

It is a super-2 number, since 2×78090051296² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78090051296.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2180285 + ... + 2215811.

It is an arithmetic number, because the mean of its divisors is an integer number (3231493650).

Almost surely, 2^78090051296 is an apocalyptic number.

It is an amenable number.

78090051296 is a deficient number, since it is larger than the sum of its proper divisors (77021643904).

78090051296 is a wasteful number, since it uses less digits than its factorization.

78090051296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36147 (or 36139 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 78090051296 in words is "seventy-eight billion, ninety million, fifty-one thousand, two hundred ninety-six".