3215992102145 has 4 divisors (see below), whose sum is σ = 3859190522580. Its totient is φ = 2572793681712.

The previous prime is 3215992102073. The next prime is 3215992102157. The reversal of 3215992102145 is 5412012995123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2054753100481 + 1161239001664 = 1433441^2 + 1077608^2 .

It is a cyclic number.

It is not a de Polignac number, because 3215992102145 - 2²⁴ = 3215975324929 is a prime.

It is a super-2 number, since 2×3215992102145² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3215992102096 and 3215992102105.

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, 321599210210 + ... + 321599210219.

It is an arithmetic number, because the mean of its divisors is an integer number (964797630645).

Almost surely, 2^{3215992102145} is an apocalyptic number.

It is an amenable number.

3215992102145 is a deficient number, since it is larger than the sum of its proper divisors (643198420435).

3215992102145 is an equidigital number, since it uses as much as digits as its factorization.

3215992102145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643198420434.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 3215992102145 in words is "three trillion, two hundred fifteen billion, nine hundred ninety-two million, one hundred two thousand, one hundred forty-five".