617927252431 has 2 divisors, whose sum is σ = 617927252432. Its totient is φ = 617927252430.

The previous prime is 617927252429. The next prime is 617927252473. The reversal of 617927252431 is 134252729716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 617927252431 - 2¹ = 617927252429 is a prime.

It is a super-2 number, since 2×617927252431² (a number of 24 digits) contains 22 as substring.

Together with 617927252429, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (617927252491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308963626215 + 308963626216.

It is an arithmetic number, because the mean of its divisors is an integer number (308963626216).

Almost surely, 2^617927252431 is an apocalyptic number.

617927252431 is a deficient number, since it is larger than the sum of its proper divisors (1).

617927252431 is an equidigital number, since it uses as much as digits as its factorization.

617927252431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 49.

The spelling of 617927252431 in words is "six hundred seventeen billion, nine hundred twenty-seven million, two hundred fifty-two thousand, four hundred thirty-one".