245336641631 has 8 divisors (see below), whose sum is σ = 248384157840. Its totient is φ = 242295590592.

The previous prime is 245336641579. The next prime is 245336641643. The reversal of 245336641631 is 136146633542.

245336641631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245336641631 is a prime.

It is a super-2 number, since 2×245336641631² (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 (245336641651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1539905 + ... + 1691738.

It is an arithmetic number, because the mean of its divisors is an integer number (31048019730).

Almost surely, 2^245336641631 is an apocalyptic number.

245336641631 is a deficient number, since it is larger than the sum of its proper divisors (3047516209).

245336641631 is an equidigital number, since it uses as much as digits as its factorization.

245336641631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232585.

The product of its digits is 933120, while the sum is 44.

The spelling of 245336641631 in words is "two hundred forty-five billion, three hundred thirty-six million, six hundred forty-one thousand, six hundred thirty-one".