426651306425521 has 16 divisors (see below), whose sum is σ = 428526712529920. Its totient is φ = 424779337382400.

The previous prime is 426651306425429. The next prime is 426651306425569. The reversal of 426651306425521 is 125524603156624.

It is a cyclic number.

It is not a de Polignac number, because 426651306425521 - 2²⁹ = 426650769554609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426651306425021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1563473536 + ... + 1563746398.

It is an arithmetic number, because the mean of its divisors is an integer number (26782919533120).

Almost surely, 2^{426651306425521} is an apocalyptic number.

It is an amenable number.

426651306425521 is a deficient number, since it is larger than the sum of its proper divisors (1875406104399).

426651306425521 is a wasteful number, since it uses less digits than its factorization.

426651306425521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279136.

The product of its (nonzero) digits is 10368000, while the sum is 52.

The spelling of 426651306425521 in words is "four hundred twenty-six trillion, six hundred fifty-one billion, three hundred six million, four hundred twenty-five thousand, five hundred twenty-one".