245401404255139 has 4 divisors (see below), whose sum is σ = 267710622823800. Its totient is φ = 223092185686480.

The previous prime is 245401404255097. The next prime is 245401404255157. The reversal of 245401404255139 is 931552404104542.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 245401404255139 - 2²⁷ = 245401270037411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245401404255092 and 245401404255101.

It is not an unprimeable number, because it can be changed into a prime (245401404265139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11154609284314 + ... + 11154609284335.

It is an arithmetic number, because the mean of its divisors is an integer number (66927655705950).

Almost surely, 2^{245401404255139} is an apocalyptic number.

245401404255139 is a deficient number, since it is larger than the sum of its proper divisors (22309218568661).

245401404255139 is a wasteful number, since it uses less digits than its factorization.

245401404255139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22309218568660.

The product of its (nonzero) digits is 3456000, while the sum is 49.

The spelling of 245401404255139 in words is "two hundred forty-five trillion, four hundred one billion, four hundred four million, two hundred fifty-five thousand, one hundred thirty-nine".