249577775942 has 16 divisors (see below), whose sum is σ = 429894734400. Its totient is φ = 107473683240.

The previous prime is 249577775921. The next prime is 249577775947.

249577775942 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249577775947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298537592 + ... + 298538427.

It is an arithmetic number, because the mean of its divisors is an integer number (26868420900).

Almost surely, 2^249577775942 is an apocalyptic number.

249577775942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

249577775942 is a deficient number, since it is larger than the sum of its proper divisors (180316958458).

249577775942 is a wasteful number, since it uses less digits than its factorization.

249577775942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597076051.

The product of its digits is 311169600, while the sum is 68.

The spelling of 249577775942 in words is "two hundred forty-nine billion, five hundred seventy-seven million, seven hundred seventy-five thousand, nine hundred forty-two".