157189282531 has 4 divisors (see below), whose sum is σ = 157204765600. Its totient is φ = 157173799464.

The previous prime is 157189282529. The next prime is 157189282541. The reversal of 157189282531 is 135282981751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135282981751 = 157 ⋅861675043.

It is a cyclic number.

It is not a de Polignac number, because 157189282531 - 2¹ = 157189282529 is a prime.

It is a super-2 number, since 2×157189282531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157189282501) 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, 7726296 + ... + 7746613.

It is an arithmetic number, because the mean of its divisors is an integer number (39301191400).

Almost surely, 2^157189282531 is an apocalyptic number.

157189282531 is a deficient number, since it is larger than the sum of its proper divisors (15483069).

157189282531 is a wasteful number, since it uses less digits than its factorization.

157189282531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15483068.

The product of its digits is 1209600, while the sum is 52.

The spelling of 157189282531 in words is "one hundred fifty-seven billion, one hundred eighty-nine million, two hundred eighty-two thousand, five hundred thirty-one".