245401013657 has 16 divisors (see below), whose sum is σ = 255906537600. Its totient is φ = 235122998400.

The previous prime is 245401013603. The next prime is 245401013701. The reversal of 245401013657 is 756310104542.

It is a cyclic number.

It is not a de Polignac number, because 245401013657 - 2²⁰ = 245399965081 is a prime.

It is a super-5 number, since 5×245401013657⁵ (a number of 58 digits) contains 55555 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245401013657.

It is not an unprimeable number, because it can be changed into a prime (245401012657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1531844 + ... + 1684442.

It is an arithmetic number, because the mean of its divisors is an integer number (15994158600).

Almost surely, 2^245401013657 is an apocalyptic number.

It is an amenable number.

245401013657 is a deficient number, since it is larger than the sum of its proper divisors (10505523943).

245401013657 is a wasteful number, since it uses less digits than its factorization.

245401013657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153344.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 245401013657 in words is "two hundred forty-five billion, four hundred one million, thirteen thousand, six hundred fifty-seven".