426665237220 has 72 divisors (see below), whose sum is σ = 1301967785664. Its totient is φ = 113096086848.

The previous prime is 426665237203. The next prime is 426665237231. The reversal of 426665237220 is 22732566624.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 7066834 + ... + 7126953.

It is an arithmetic number, because the mean of its divisors is an integer number (18082885912).

Almost surely, 2^426665237220 is an apocalyptic number.

It is an amenable number.

426665237220 is an abundant number, since it is smaller than the sum of its proper divisors (875302548444).

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

426665237220 is a wasteful number, since it uses less digits than its factorization.

426665237220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14193969 (or 14193964 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 45.

The spelling of 426665237220 in words is "four hundred twenty-six billion, six hundred sixty-five million, two hundred thirty-seven thousand, two hundred twenty".