1172167618722 has 16 divisors (see below), whose sum is σ = 2382766963392. Its totient is φ = 384317251920.

The previous prime is 1172167618663. The next prime is 1172167618723. The reversal of 1172167618722 is 2278167612711.

It is not an unprimeable number, because it can be changed into a prime (1172167618723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1601321518 + ... + 1601322249.

It is an arithmetic number, because the mean of its divisors is an integer number (148922935212).

Almost surely, 2^{1172167618722} is an apocalyptic number.

1172167618722 is an abundant number, since it is smaller than the sum of its proper divisors (1210599344670).

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

1172167618722 is a wasteful number, since it uses less digits than its factorization.

1172167618722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202643833.

The product of its digits is 790272, while the sum is 51.

The spelling of 1172167618722 in words is "one trillion, one hundred seventy-two billion, one hundred sixty-seven million, six hundred eighteen thousand, seven hundred twenty-two".