426079689021 has 64 divisors (see below), whose sum is σ = 728132774400. Its totient is φ = 241205465088.

The previous prime is 426079688977. The next prime is 426079689041. The reversal of 426079689021 is 120986970624.

426079689021 is a `hidden beast` number, since 4 + 2 + 607 + 9 + 6 + 8 + 9 + 0 + 21 = 666.

It is not a de Polignac number, because 426079689021 - 2¹⁴ = 426079672637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426079689041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 68531505 + ... + 68537721.

It is an arithmetic number, because the mean of its divisors is an integer number (11377074600).

Almost surely, 2^426079689021 is an apocalyptic number.

It is an amenable number.

426079689021 is a deficient number, since it is larger than the sum of its proper divisors (302053085379).

426079689021 is a wasteful number, since it uses less digits than its factorization.

426079689021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9555 (or 9549 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 426079689021 in words is "four hundred twenty-six billion, seventy-nine million, six hundred eighty-nine thousand, twenty-one".