3121658150545 has 48 divisors (see below), whose sum is σ = 4273802616384. Its totient is φ = 2170638800000.

The previous prime is 3121658150521. The next prime is 3121658150549. The reversal of 3121658150545 is 5450518561213.

It is a de Polignac number, because none of the positive numbers 2^k-3121658150545 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121658150495 and 3121658150504.

It is not an unprimeable number, because it can be changed into a prime (3121658150549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70125795 + ... + 70170295.

It is an arithmetic number, because the mean of its divisors is an integer number (89037554508).

Almost surely, 2^{3121658150545} is an apocalyptic number.

It is an amenable number.

3121658150545 is a deficient number, since it is larger than the sum of its proper divisors (1152144465839).

3121658150545 is a wasteful number, since it uses less digits than its factorization.

3121658150545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46974 (or 46951 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 46.

The spelling of 3121658150545 in words is "three trillion, one hundred twenty-one billion, six hundred fifty-eight million, one hundred fifty thousand, five hundred forty-five".