642216959058 has 64 divisors (see below), whose sum is σ = 1355718960000. Its totient is φ = 202253635584.

The previous prime is 642216959057. The next prime is 642216959071. The reversal of 642216959058 is 850959612246.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 642216958989 and 642216959007.

It is not an unprimeable number, because it can be changed into a prime (642216959051) 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, 70966518 + ... + 70975566.

It is an arithmetic number, because the mean of its divisors is an integer number (21183108750).

Almost surely, 2^642216959058 is an apocalyptic number.

642216959058 is an abundant number, since it is smaller than the sum of its proper divisors (713502000942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642216959058 is a wasteful number, since it uses less digits than its factorization.

642216959058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10699.

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 642216959058 in words is "six hundred forty-two billion, two hundred sixteen million, nine hundred fifty-nine thousand, fifty-eight".