426560545421 has 4 divisors (see below), whose sum is σ = 429114800352. Its totient is φ = 424006290492.

The previous prime is 426560545409. The next prime is 426560545429. The reversal of 426560545421 is 124545065624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426560545421 is a prime.

It is a super-2 number, since 2×426560545421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426560545429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277127215 + ... + 1277127548.

It is an arithmetic number, because the mean of its divisors is an integer number (107278700088).

Almost surely, 2^426560545421 is an apocalyptic number.

It is an amenable number.

426560545421 is a deficient number, since it is larger than the sum of its proper divisors (2554254931).

426560545421 is a wasteful number, since it uses less digits than its factorization.

426560545421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554254930.

The product of its (nonzero) digits is 1152000, while the sum is 44.

The spelling of 426560545421 in words is "four hundred twenty-six billion, five hundred sixty million, five hundred forty-five thousand, four hundred twenty-one".