642046642607 has 2 divisors, whose sum is σ = 642046642608. Its totient is φ = 642046642606.

The previous prime is 642046642603. The next prime is 642046642681. The reversal of 642046642607 is 706246640246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 642046642607 - 2² = 642046642603 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642046642603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321023321303 + 321023321304.

It is an arithmetic number, because the mean of its divisors is an integer number (321023321304).

Almost surely, 2^642046642607 is an apocalyptic number.

642046642607 is a deficient number, since it is larger than the sum of its proper divisors (1).

642046642607 is an equidigital number, since it uses as much as digits as its factorization.

642046642607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 47.

The spelling of 642046642607 in words is "six hundred forty-two billion, forty-six million, six hundred forty-two thousand, six hundred seven".