245479091139 has 12 divisors (see below), whose sum is σ = 362826977656. Its totient is φ = 159846849792.

The previous prime is 245479091119. The next prime is 245479091161. The reversal of 245479091139 is 931190974542.

245479091139 is a `hidden beast` number, since 2 + 4 + 547 + 9 + 0 + 91 + 1 + 3 + 9 = 666.

It is not a de Polignac number, because 245479091139 - 2⁵ = 245479091107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245479091119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 317156062 + ... + 317156835.

Almost surely, 2^245479091139 is an apocalyptic number.

245479091139 is a deficient number, since it is larger than the sum of its proper divisors (117347886517).

245479091139 is a wasteful number, since it uses less digits than its factorization.

245479091139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634312946 (or 634312943 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 245479091139 in words is "two hundred forty-five billion, four hundred seventy-nine million, ninety-one thousand, one hundred thirty-nine".