76645422431 has 2 divisors, whose sum is σ = 76645422432. Its totient is φ = 76645422430.

The previous prime is 76645422407. The next prime is 76645422467. The reversal of 76645422431 is 13422454667.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76645422431 - 2⁶ = 76645422367 is a prime.

It is a super-2 number, since 2×76645422431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76645422331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38322711215 + 38322711216.

It is an arithmetic number, because the mean of its divisors is an integer number (38322711216).

Almost surely, 2^76645422431 is an apocalyptic number.

76645422431 is a deficient number, since it is larger than the sum of its proper divisors (1).

76645422431 is an equidigital number, since it uses as much as digits as its factorization.

76645422431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 44.

The spelling of 76645422431 in words is "seventy-six billion, six hundred forty-five million, four hundred twenty-two thousand, four hundred thirty-one".