642464286051 has 32 divisors (see below), whose sum is σ = 1010505241600. Its totient is φ = 355405159296.

The previous prime is 642464286049. The next prime is 642464286053. The reversal of 642464286051 is 150682464246.

642464286051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (642464286049) and next prime (642464286053).

It is not a de Polignac number, because 642464286051 - 2¹ = 642464286049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642464286053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1922896 + ... + 2232141.

It is an arithmetic number, because the mean of its divisors is an integer number (31578288800).

Almost surely, 2^642464286051 is an apocalyptic number.

642464286051 is a deficient number, since it is larger than the sum of its proper divisors (368040955549).

642464286051 is a wasteful number, since it uses less digits than its factorization.

642464286051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4155283.

The product of its (nonzero) digits is 2211840, while the sum is 48.

The spelling of 642464286051 in words is "six hundred forty-two billion, four hundred sixty-four million, two hundred eighty-six thousand, fifty-one".