5238435375621 has 72 divisors (see below), whose sum is σ = 8920478543040. Its totient is φ = 2976220586592.

The previous prime is 5238435375617. The next prime is 5238435375659. The reversal of 5238435375621 is 1265735348325.

5238435375621 is a `hidden beast` number, since 5 + 2 + 3 + 8 + 4 + 3 + 5 + 3 + 7 + 5 + 621 = 666.

It is not a de Polignac number, because 5238435375621 - 2² = 5238435375617 is a prime.

It is a super-2 number, since 2×5238435375621² (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 (5238435375601) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7205550360 + ... + 7205551086.

It is an arithmetic number, because the mean of its divisors is an integer number (123895535320).

Almost surely, 2^{5238435375621} is an apocalyptic number.

It is an amenable number.

5238435375621 is a deficient number, since it is larger than the sum of its proper divisors (3682043167419).

5238435375621 is an frugal number, since it uses more digits than its factorization.

5238435375621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928 (or 966 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 54.

The spelling of 5238435375621 in words is "five trillion, two hundred thirty-eight billion, four hundred thirty-five million, three hundred seventy-five thousand, six hundred twenty-one".