642232686470 has 16 divisors (see below), whose sum is σ = 1167464568528. Its totient is φ = 254349578400.

The previous prime is 642232686461. The next prime is 642232686481. The reversal of 642232686470 is 74686232246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317935964 + ... + 317937983.

It is an arithmetic number, because the mean of its divisors is an integer number (72966535533).

Almost surely, 2^642232686470 is an apocalyptic number.

642232686470 is a deficient number, since it is larger than the sum of its proper divisors (525231882058).

642232686470 is a wasteful number, since it uses less digits than its factorization.

642232686470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635874055.

The product of its (nonzero) digits is 4644864, while the sum is 50.

The spelling of 642232686470 in words is "six hundred forty-two billion, two hundred thirty-two million, six hundred eighty-six thousand, four hundred seventy".