157867981133 has 4 divisors (see below), whose sum is σ = 157978611840. Its totient is φ = 157757350428.

The previous prime is 157867981129. The next prime is 157867981153. The reversal of 157867981133 is 331189768751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 157867981133 - 2² = 157867981129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157867981153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55313213 + ... + 55316066.

It is an arithmetic number, because the mean of its divisors is an integer number (39494652960).

Almost surely, 2^157867981133 is an apocalyptic number.

It is an amenable number.

157867981133 is a deficient number, since it is larger than the sum of its proper divisors (110630707).

157867981133 is a wasteful number, since it uses less digits than its factorization.

157867981133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110630706.

The product of its digits is 7620480, while the sum is 59.

The spelling of 157867981133 in words is "one hundred fifty-seven billion, eight hundred sixty-seven million, nine hundred eighty-one thousand, one hundred thirty-three".