426820748431 has 24 divisors (see below), whose sum is σ = 554239027584. Its totient is φ = 324852983280.

The previous prime is 426820748429. The next prime is 426820748441. The reversal of 426820748431 is 134847028624.

It is not a de Polignac number, because 426820748431 - 2¹ = 426820748429 is a prime.

It is a super-2 number, since 2×426820748431² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426820748441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9184675 + ... + 9231028.

It is an arithmetic number, because the mean of its divisors is an integer number (23093292816).

Almost surely, 2^426820748431 is an apocalyptic number.

426820748431 is a deficient number, since it is larger than the sum of its proper divisors (127418279153).

426820748431 is a wasteful number, since it uses less digits than its factorization.

426820748431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18415771 (or 18415764 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 49.

The spelling of 426820748431 in words is "four hundred twenty-six billion, eight hundred twenty million, seven hundred forty-eight thousand, four hundred thirty-one".