426535163621 has 16 divisors (see below), whose sum is σ = 491250441600. Its totient is φ = 362773618368.

The previous prime is 426535163617. The next prime is 426535163657. The reversal of 426535163621 is 126361535624.

It is not a de Polignac number, because 426535163621 - 2² = 426535163617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426535163671) 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, 270410 + ... + 962388.

It is an arithmetic number, because the mean of its divisors is an integer number (30703152600).

Almost surely, 2^426535163621 is an apocalyptic number.

It is an amenable number.

426535163621 is a deficient number, since it is larger than the sum of its proper divisors (64715277979).

426535163621 is a wasteful number, since it uses less digits than its factorization.

426535163621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692668.

The product of its digits is 777600, while the sum is 44.

The spelling of 426535163621 in words is "four hundred twenty-six billion, five hundred thirty-five million, one hundred sixty-three thousand, six hundred twenty-one".