253157622242 has 8 divisors (see below), whose sum is σ = 433984495296. Its totient is φ = 108496123812.

The previous prime is 253157622199. The next prime is 253157622247. The reversal of 253157622242 is 242226751352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 253157622242.

It is not an unprimeable number, because it can be changed into a prime (253157622247) 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, 9041343638 + ... + 9041343665.

It is an arithmetic number, because the mean of its divisors is an integer number (54248061912).

Almost surely, 2^253157622242 is an apocalyptic number.

253157622242 is a deficient number, since it is larger than the sum of its proper divisors (180826873054).

253157622242 is a wasteful number, since it uses less digits than its factorization.

253157622242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18082687312.

The product of its digits is 403200, while the sum is 41.

The spelling of 253157622242 in words is "two hundred fifty-three billion, one hundred fifty-seven million, six hundred twenty-two thousand, two hundred forty-two".