642460606079 has 2 divisors, whose sum is σ = 642460606080. Its totient is φ = 642460606078.

The previous prime is 642460606043. The next prime is 642460606127. The reversal of 642460606079 is 970606064246.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 642460606079 - 2⁸ = 642460605823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642460606009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321230303039 + 321230303040.

It is an arithmetic number, because the mean of its divisors is an integer number (321230303040).

Almost surely, 2^642460606079 is an apocalyptic number.

642460606079 is a deficient number, since it is larger than the sum of its proper divisors (1).

642460606079 is an equidigital number, since it uses as much as digits as its factorization.

642460606079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 642460606079 in words is "six hundred forty-two billion, four hundred sixty million, six hundred six thousand, seventy-nine".