157128377 has 8 divisors (see below), whose sum is σ = 179995392. Its totient is φ = 134366400.

The previous prime is 157128373. The next prime is 157128383. The reversal of 157128377 is 773821751.

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

It is not a de Polignac number, because 157128377 - 2² = 157128373 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157128371) 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, 23024 + ... + 29057.

It is an arithmetic number, because the mean of its divisors is an integer number (22499424).

Almost surely, 2^157128377 is an apocalyptic number.

It is an amenable number.

157128377 is a deficient number, since it is larger than the sum of its proper divisors (22867015).

157128377 is an equidigital number, since it uses as much as digits as its factorization.

157128377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52519.

The product of its digits is 82320, while the sum is 41.

The square root of 157128377 is about 12535.0858393551. The cubic root of 157128377 is about 539.6160702621.

The spelling of 157128377 in words is "one hundred fifty-seven million, one hundred twenty-eight thousand, three hundred seventy-seven".