3121587638488 has 64 divisors (see below), whose sum is σ = 6776059276800. Its totient is φ = 1332396280320.

The previous prime is 3121587638483. The next prime is 3121587638489. The reversal of 3121587638488 is 8848367851213.

It is a super-2 number, since 2×3121587638488² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121587638483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1719820 + ... + 3033307.

It is an arithmetic number, because the mean of its divisors is an integer number (105875926200).

Almost surely, 2^{3121587638488} is an apocalyptic number.

It is an amenable number.

3121587638488 is an abundant number, since it is smaller than the sum of its proper divisors (3654471638312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121587638488 is a wasteful number, since it uses less digits than its factorization.

3121587638488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4753600 (or 4753596 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 64.

The spelling of 3121587638488 in words is "three trillion, one hundred twenty-one billion, five hundred eighty-seven million, six hundred thirty-eight thousand, four hundred eighty-eight".