78796022217 has 16 divisors (see below), whose sum is σ = 117050959872. Its totient is φ = 46739096720.

The previous prime is 78796022189. The next prime is 78796022231. The reversal of 78796022217 is 71222069787.

It is a cyclic number.

It is not a de Polignac number, because 78796022217 - 2⁶ = 78796022153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78796022217.

It is not an unprimeable number, because it can be changed into a prime (78796022257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25400133 + ... + 25403234.

It is an arithmetic number, because the mean of its divisors is an integer number (7315684992).

Almost surely, 2^78796022217 is an apocalyptic number.

It is an amenable number.

78796022217 is a deficient number, since it is larger than the sum of its proper divisors (38254937655).

78796022217 is a wasteful number, since it uses less digits than its factorization.

78796022217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50803428.

The product of its (nonzero) digits is 1185408, while the sum is 51.

The spelling of 78796022217 in words is "seventy-eight billion, seven hundred ninety-six million, twenty-two thousand, two hundred seventeen".