157989989751 has 32 divisors (see below), whose sum is σ = 237045580800. Its totient is φ = 92756638080.

The previous prime is 157989989737. The next prime is 157989989767.

157989989751 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 157989989751 - 2⁹ = 157989989239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157989989771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2911 + ... + 562128.

It is an arithmetic number, because the mean of its divisors is an integer number (7407674400).

Almost surely, 2^157989989751 is an apocalyptic number.

157989989751 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

157989989751 is a deficient number, since it is larger than the sum of its proper divisors (79055591049).

157989989751 is a wasteful number, since it uses less digits than its factorization.

157989989751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565319.

The product of its digits is 514382400, while the sum is 78.

The spelling of 157989989751 in words is "one hundred fifty-seven billion, nine hundred eighty-nine million, nine hundred eighty-nine thousand, seven hundred fifty-one".