157957243138 has 8 divisors (see below), whose sum is σ = 237222367632. Its totient is φ = 78883120596.

The previous prime is 157957243133. The next prime is 157957243141. The reversal of 157957243138 is 831342759751.

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

It is a super-3 number, since 3×157957243138³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (157957243133) 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, 47748420 + ... + 47751727.

It is an arithmetic number, because the mean of its divisors is an integer number (29652795954).

Almost surely, 2^157957243138 is an apocalyptic number.

157957243138 is a deficient number, since it is larger than the sum of its proper divisors (79265124494).

157957243138 is an equidigital number, since it uses as much as digits as its factorization.

157957243138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95500976.

The product of its digits is 6350400, while the sum is 55.

The spelling of 157957243138 in words is "one hundred fifty-seven billion, nine hundred fifty-seven million, two hundred forty-three thousand, one hundred thirty-eight".