66432025631 has 2 divisors, whose sum is σ = 66432025632. Its totient is φ = 66432025630.

The previous prime is 66432025613. The next prime is 66432025651. The reversal of 66432025631 is 13652023466.

It is a happy number.

Together with previous prime (66432025613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66432025631 - 2¹⁴ = 66432009247 is a prime.

It is a super-2 number, since 2×66432025631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66432025601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33216012815 + 33216012816.

It is an arithmetic number, because the mean of its divisors is an integer number (33216012816).

Almost surely, 2^66432025631 is an apocalyptic number.

66432025631 is a deficient number, since it is larger than the sum of its proper divisors (1).

66432025631 is an equidigital number, since it uses as much as digits as its factorization.

66432025631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 66432025631 in words is "sixty-six billion, four hundred thirty-two million, twenty-five thousand, six hundred thirty-one".