642858964287 has 16 divisors (see below), whose sum is σ = 862401724800. Its totient is φ = 425952425952.

The previous prime is 642858964277. The next prime is 642858964331. The reversal of 642858964287 is 782469858246.

It is not a de Polignac number, because 642858964287 - 2⁷ = 642858964159 is a prime.

642858964287 is a modest number, since divided by 964287 gives 642858 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642858964277) 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, 678573 + ... + 1321430.

It is an arithmetic number, because the mean of its divisors is an integer number (53900107800).

Almost surely, 2^642858964287 is an apocalyptic number.

642858964287 is a deficient number, since it is larger than the sum of its proper divisors (219542760513).

642858964287 is a wasteful number, since it uses less digits than its factorization.

642858964287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000662.

The product of its digits is 371589120, while the sum is 69.

The spelling of 642858964287 in words is "six hundred forty-two billion, eight hundred fifty-eight million, nine hundred sixty-four thousand, two hundred eighty-seven".