642462588401 has 2 divisors, whose sum is σ = 642462588402. Its totient is φ = 642462588400.

The previous prime is 642462588359. The next prime is 642462588413. The reversal of 642462588401 is 104885264246.

642462588401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 592709055376 + 49753533025 = 769876^2 + 223055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-642462588401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 642462588401.

It is not a weakly prime, because it can be changed into another prime (642462588451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321231294200 + 321231294201.

It is an arithmetic number, because the mean of its divisors is an integer number (321231294201).

Almost surely, 2^642462588401 is an apocalyptic number.

It is an amenable number.

642462588401 is a deficient number, since it is larger than the sum of its proper divisors (1).

642462588401 is an equidigital number, since it uses as much as digits as its factorization.

642462588401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2949120, while the sum is 50.

The spelling of 642462588401 in words is "six hundred forty-two billion, four hundred sixty-two million, five hundred eighty-eight thousand, four hundred one".