642210532158 has 16 divisors (see below), whose sum is σ = 1383222684816. Its totient is φ = 197603240640.

The previous prime is 642210532097. The next prime is 642210532169. The reversal of 642210532158 is 851235012246.

It is a super-2 number, since 2×642210532158² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 4116734103 + ... + 4116734258.

It is an arithmetic number, because the mean of its divisors is an integer number (86451417801).

Almost surely, 2^642210532158 is an apocalyptic number.

642210532158 is an abundant number, since it is smaller than the sum of its proper divisors (741012152658).

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

642210532158 is a wasteful number, since it uses less digits than its factorization.

642210532158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8233468379.

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 642210532158 in words is "six hundred forty-two billion, two hundred ten million, five hundred thirty-two thousand, one hundred fifty-eight".