78207422265 has 32 divisors (see below), whose sum is σ = 158897621760. Its totient is φ = 35751964032.

The previous prime is 78207422257. The next prime is 78207422303. The reversal of 78207422265 is 56222470287.

It is not a de Polignac number, because 78207422265 - 2³ = 78207422257 is a prime.

It is a super-2 number, since 2×78207422265² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 78207422265.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41378644 + ... + 41380533.

It is an arithmetic number, because the mean of its divisors is an integer number (4965550680).

Almost surely, 2^78207422265 is an apocalyptic number.

It is an amenable number.

78207422265 is an abundant number, since it is smaller than the sum of its proper divisors (80690199495).

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

78207422265 is a wasteful number, since it uses less digits than its factorization.

78207422265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82759198 (or 82759192 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 78207422265 in words is "seventy-eight billion, two hundred seven million, four hundred twenty-two thousand, two hundred sixty-five".