426653991937 has 4 divisors (see below), whose sum is σ = 436576177840. Its totient is φ = 416731806036.

The previous prime is 426653991913. The next prime is 426653991947. The reversal of 426653991937 is 739199356624.

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 not a de Polignac number, because 426653991937 - 2¹¹ = 426653989889 is a prime.

It is a super-2 number, since 2×426653991937² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426653991947) 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, 4961092887 + ... + 4961092972.

It is an arithmetic number, because the mean of its divisors is an integer number (109144044460).

Almost surely, 2^426653991937 is an apocalyptic number.

It is an amenable number.

426653991937 is a deficient number, since it is larger than the sum of its proper divisors (9922185903).

426653991937 is an equidigital number, since it uses as much as digits as its factorization.

426653991937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9922185902.

The product of its digits is 66134880, while the sum is 64.

The spelling of 426653991937 in words is "four hundred twenty-six billion, six hundred fifty-three million, nine hundred ninety-one thousand, nine hundred thirty-seven".