64202533631 has 2 divisors, whose sum is σ = 64202533632. Its totient is φ = 64202533630.

The previous prime is 64202533597. The next prime is 64202533691. The reversal of 64202533631 is 13633520246.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64202533631 is a prime.

It is a super-2 number, since 2×64202533631² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64202533591 and 64202533600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64202533691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32101266815 + 32101266816.

It is an arithmetic number, because the mean of its divisors is an integer number (32101266816).

Almost surely, 2^64202533631 is an apocalyptic number.

64202533631 is a deficient number, since it is larger than the sum of its proper divisors (1).

64202533631 is an equidigital number, since it uses as much as digits as its factorization.

64202533631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 35.

The spelling of 64202533631 in words is "sixty-four billion, two hundred two million, five hundred thirty-three thousand, six hundred thirty-one".