157235729939 has 4 divisors (see below), whose sum is σ = 158177261424. Its totient is φ = 156294198456.

The previous prime is 157235729933. The next prime is 157235729971. The reversal of 157235729939 is 939927532751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939927532751 = 47129 ⋅19943719.

It is a cyclic number.

It is not a de Polignac number, because 157235729939 - 2⁸ = 157235729683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157235729933) 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, 470765492 + ... + 470765825.

It is an arithmetic number, because the mean of its divisors is an integer number (39544315356).

Almost surely, 2^157235729939 is an apocalyptic number.

157235729939 is a deficient number, since it is larger than the sum of its proper divisors (941531485).

157235729939 is an equidigital number, since it uses as much as digits as its factorization.

157235729939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941531484.

The product of its digits is 32148900, while the sum is 62.

The spelling of 157235729939 in words is "one hundred fifty-seven billion, two hundred thirty-five million, seven hundred twenty-nine thousand, nine hundred thirty-nine".