245657507613 has 16 divisors (see below), whose sum is σ = 374391728256. Its totient is φ = 140354539200.

The previous prime is 245657507597. The next prime is 245657507617. The reversal of 245657507613 is 316705756542.

It is not a de Polignac number, because 245657507613 - 2⁴ = 245657507597 is a prime.

It is a super-2 number, since 2×245657507613² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245657507617) 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, 739438 + ... + 1018863.

It is an arithmetic number, because the mean of its divisors is an integer number (23399483016).

Almost surely, 2^245657507613 is an apocalyptic number.

It is an amenable number.

245657507613 is a deficient number, since it is larger than the sum of its proper divisors (128734220643).

245657507613 is a wasteful number, since it uses less digits than its factorization.

245657507613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764964.

The product of its (nonzero) digits is 5292000, while the sum is 51.

The spelling of 245657507613 in words is "two hundred forty-five billion, six hundred fifty-seven million, five hundred seven thousand, six hundred thirteen".