157988772381 has 16 divisors (see below), whose sum is σ = 231949536768. Its totient is φ = 94855902000.

The previous prime is 157988772379. The next prime is 157988772397. The reversal of 157988772381 is 183277889751.

157988772381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157988772381 - 2¹ = 157988772379 is a prime.

It is a super-2 number, since 2×157988772381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157988772481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22368145 + ... + 22375206.

It is an arithmetic number, because the mean of its divisors is an integer number (14496846048).

Almost surely, 2^157988772381 is an apocalyptic number.

157988772381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

157988772381 is a deficient number, since it is larger than the sum of its proper divisors (73960764387).

157988772381 is a wasteful number, since it uses less digits than its factorization.

157988772381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44743472.

The product of its digits is 47416320, while the sum is 66.

The spelling of 157988772381 in words is "one hundred fifty-seven billion, nine hundred eighty-eight million, seven hundred seventy-two thousand, three hundred eighty-one".