249653618706 has 16 divisors (see below), whose sum is σ = 499334811264. Its totient is φ = 83213277264.

The previous prime is 249653618701. The next prime is 249653618743. The reversal of 249653618706 is 607816356942.

It is a super-2 number, since 2×249653618706² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (249653618701) 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, 1030266 + ... + 1249301.

It is an arithmetic number, because the mean of its divisors is an integer number (31208425704).

It is a 1-persistent number, because it is pandigital, but 2⋅249653618706 = 499307237412 is not.

Almost surely, 2^249653618706 is an apocalyptic number.

249653618706 is an abundant number, since it is smaller than the sum of its proper divisors (249681192558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249653618706 is a wasteful number, since it uses less digits than its factorization.

249653618706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297825.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 249653618706 in words is "two hundred forty-nine billion, six hundred fifty-three million, six hundred eighteen thousand, seven hundred six".