2171189156392 has 16 divisors (see below), whose sum is σ = 4071286025460. Its totient is φ = 1085512882944.

The previous prime is 2171189156363. The next prime is 2171189156447. The reversal of 2171189156392 is 2936519811712.

It can be written as a sum of positive squares in 2 ways, for example, as 1452685415076 + 718503741316 = 1205274^2 + 847646^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10098883 + ... + 10311634.

Almost surely, 2^{2171189156392} is an apocalyptic number.

It is an amenable number.

2171189156392 is a deficient number, since it is larger than the sum of its proper divisors (1900096869068).

2171189156392 is a wasteful number, since it uses less digits than its factorization.

2171189156392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20423820 (or 20423816 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 55.

The spelling of 2171189156392 in words is "two trillion, one hundred seventy-one billion, one hundred eighty-nine million, one hundred fifty-six thousand, three hundred ninety-two".