249565565942 has 32 divisors (see below), whose sum is σ = 471531594240. Its totient is φ = 96230926080.

The previous prime is 249565565929. The next prime is 249565565947.

249565565942 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 (249565565947) 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, 8338442 + ... + 8368317.

It is an arithmetic number, because the mean of its divisors is an integer number (14735362320).

Almost surely, 2^249565565942 is an apocalyptic number.

249565565942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

249565565942 is a deficient number, since it is larger than the sum of its proper divisors (221966028298).

249565565942 is a wasteful number, since it uses less digits than its factorization.

249565565942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16706876.

The product of its digits is 116640000, while the sum is 62.

The spelling of 249565565942 in words is "two hundred forty-nine billion, five hundred sixty-five million, five hundred sixty-five thousand, nine hundred forty-two".