3121151664436 has 36 divisors (see below), whose sum is σ = 6105280105344. Its totient is φ = 1394062768800.

The previous prime is 3121151664431. The next prime is 3121151664437. The reversal of 3121151664436 is 6344661511213.

It is a super-2 number, since 2×3121151664436² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3121151664392 and 3121151664401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121151664431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74448210 + ... + 74490121.

Almost surely, 2^{3121151664436} is an apocalyptic number.

It is an amenable number.

3121151664436 is a deficient number, since it is larger than the sum of its proper divisors (2984128440908).

3121151664436 is a wasteful number, since it uses less digits than its factorization.

3121151664436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148938392 (or 148938377 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The spelling of 3121151664436 in words is "three trillion, one hundred twenty-one billion, one hundred fifty-one million, six hundred sixty-four thousand, four hundred thirty-six".