157988737989 has 12 divisors (see below), whose sum is σ = 228238448256. Its totient is φ = 105310828392.

The previous prime is 157988737957. The next prime is 157988738059. The reversal of 157988737989 is 989737889751.

It is a happy number.

157988737989 is a `hidden beast` number, since 1 + 5 + 7 + 98 + 87 + 379 + 89 = 666.

157988737989 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 157988737989 - 2⁵ = 157988737957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157988737909) 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 11 ways as a sum of consecutive naturals, for example, 1182837 + ... + 1309610.

It is an arithmetic number, because the mean of its divisors is an integer number (19019870688).

Almost surely, 2^157988737989 is an apocalyptic number.

It is an amenable number.

157988737989 is a deficient number, since it is larger than the sum of its proper divisors (70249710267).

157988737989 is a wasteful number, since it uses less digits than its factorization.

157988737989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499496 (or 2499493 counting only the distinct ones).

The product of its digits is 1920360960, while the sum is 81.

The spelling of 157988737989 in words is "one hundred fifty-seven billion, nine hundred eighty-eight million, seven hundred thirty-seven thousand, nine hundred eighty-nine".