642026106216 has 96 divisors (see below), whose sum is σ = 1901297473920. Its totient is φ = 194101862400.

The previous prime is 642026106203. The next prime is 642026106263. The reversal of 642026106216 is 612601620246.

642026106216 is a `hidden beast` number, since 6 + 4 + 2 + 0 + 26 + 1 + 0 + 621 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 599065 + ... + 1281768.

It is an arithmetic number, because the mean of its divisors is an integer number (19805182020).

Almost surely, 2^642026106216 is an apocalyptic number.

642026106216 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

642026106216 is an abundant number, since it is smaller than the sum of its proper divisors (1259271367704).

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

642026106216 is a wasteful number, since it uses less digits than its factorization.

642026106216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881287 (or 1881280 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 642026106216 in words is "six hundred forty-two billion, twenty-six million, one hundred six thousand, two hundred sixteen".