245651344631 has 16 divisors (see below), whose sum is σ = 309298963968. Its totient is φ = 189521412000.

The previous prime is 245651344619. The next prime is 245651344669. The reversal of 245651344631 is 136443156542.

It is a cyclic number.

It is not a de Polignac number, because 245651344631 - 2³⁰ = 244577602807 is a prime.

It is a super-2 number, since 2×245651344631² (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 (245651344031) 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, 15785675 + ... + 15801228.

It is an arithmetic number, because the mean of its divisors is an integer number (19331185248).

Almost surely, 2^245651344631 is an apocalyptic number.

245651344631 is a deficient number, since it is larger than the sum of its proper divisors (63647619337).

245651344631 is a wasteful number, since it uses less digits than its factorization.

245651344631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31587022.

The product of its digits is 1036800, while the sum is 44.

The spelling of 245651344631 in words is "two hundred forty-five billion, six hundred fifty-one million, three hundred forty-four thousand, six hundred thirty-one".