642453160557 has 16 divisors (see below), whose sum is σ = 925010481920. Its totient is φ = 394278518592.

The previous prime is 642453160543. The next prime is 642453160589. The reversal of 642453160557 is 755061354246.

It is not a de Polignac number, because 642453160557 - 2¹¹ = 642453158509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642453160057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22428682 + ... + 22457307.

It is an arithmetic number, because the mean of its divisors is an integer number (57813155120).

Almost surely, 2^642453160557 is an apocalyptic number.

It is an amenable number.

642453160557 is a deficient number, since it is larger than the sum of its proper divisors (282557321363).

642453160557 is a wasteful number, since it uses less digits than its factorization.

642453160557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44886372.

The product of its (nonzero) digits is 3024000, while the sum is 48.

The spelling of 642453160557 in words is "six hundred forty-two billion, four hundred fifty-three million, one hundred sixty thousand, five hundred fifty-seven".