157749309307 has 8 divisors (see below), whose sum is σ = 163205591040. Its totient is φ = 152316002280.

The previous prime is 157749309269. The next prime is 157749309323. The reversal of 157749309307 is 703903947751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157749309307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157749309337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5729707 + ... + 5757172.

It is an arithmetic number, because the mean of its divisors is an integer number (20400698880).

Almost surely, 2^157749309307 is an apocalyptic number.

157749309307 is a deficient number, since it is larger than the sum of its proper divisors (5456281733).

157749309307 is a wasteful number, since it uses less digits than its factorization.

157749309307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11487353.

The product of its (nonzero) digits is 5000940, while the sum is 55.

The spelling of 157749309307 in words is "one hundred fifty-seven billion, seven hundred forty-nine million, three hundred nine thousand, three hundred seven".