3128391663076 has 9 divisors (see below), whose sum is σ = 5474691600931. Its totient is φ = 1564194062812.

The previous prime is 3128391663049. The next prime is 3128391663097. The reversal of 3128391663076 is 6703661938213.

The square root of 3128391663076 is 1768726.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×3128391663076² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3095271 + ... + 3979633.

Almost surely, 2^{3128391663076} is an apocalyptic number.

3128391663076 is the 1768726-th square number.

It is an amenable number.

3128391663076 is a deficient number, since it is larger than the sum of its proper divisors (2346299937855).

3128391663076 is an frugal number, since it uses more digits than its factorization.

3128391663076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768730 (or 884365 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 3128391663076 in words is "three trillion, one hundred twenty-eight billion, three hundred ninety-one million, six hundred sixty-three thousand, seventy-six".