3161208525545 has 24 divisors (see below), whose sum is σ = 4444999230024. Its totient is φ = 2151863298816.

The previous prime is 3161208525529. The next prime is 3161208525557. The reversal of 3161208525545 is 5455258021613.

It can be written as a sum of positive squares in 4 ways, for example, as 561619844569 + 2599588680976 = 749413^2 + 1612324^2 .

It is not a de Polignac number, because 3161208525545 - 2⁴ = 3161208525529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3161208525545.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47057282 + ... + 47124411.

It is an arithmetic number, because the mean of its divisors is an integer number (185208301251).

Almost surely, 2^{3161208525545} is an apocalyptic number.

3161208525545 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3161208525545 is a deficient number, since it is larger than the sum of its proper divisors (1283790704479).

3161208525545 is a wasteful number, since it uses less digits than its factorization.

3161208525545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94181849 (or 94181842 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 47.

The spelling of 3161208525545 in words is "three trillion, one hundred sixty-one billion, two hundred eight million, five hundred twenty-five thousand, five hundred forty-five".