75202020631 has 2 divisors, whose sum is σ = 75202020632. Its totient is φ = 75202020630.

The previous prime is 75202020629. The next prime is 75202020721. The reversal of 75202020631 is 13602020257.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75202020631 - 2¹ = 75202020629 is a prime.

It is a super-2 number, since 2×75202020631² (a number of 23 digits) contains 22 as substring.

Together with 75202020629, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 75202020631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75202020431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37601010315 + 37601010316.

It is an arithmetic number, because the mean of its divisors is an integer number (37601010316).

Almost surely, 2^75202020631 is an apocalyptic number.

75202020631 is a deficient number, since it is larger than the sum of its proper divisors (1).

75202020631 is an equidigital number, since it uses as much as digits as its factorization.

75202020631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 75202020631 its reverse (13602020257), we get a palindrome (88804040888).

The spelling of 75202020631 in words is "seventy-five billion, two hundred two million, twenty thousand, six hundred thirty-one".