157394985539 has 4 divisors (see below), whose sum is σ = 171703620600. Its totient is φ = 143086350480.

The previous prime is 157394985491. The next prime is 157394985551. The reversal of 157394985539 is 935589493751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157394985539 - 2⁸ = 157394985283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157394988539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7154317514 + ... + 7154317535.

It is an arithmetic number, because the mean of its divisors is an integer number (42925905150).

Almost surely, 2^157394985539 is an apocalyptic number.

157394985539 is a deficient number, since it is larger than the sum of its proper divisors (14308635061).

157394985539 is a wasteful number, since it uses less digits than its factorization.

157394985539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14308635060.

The product of its digits is 183708000, while the sum is 68.

The spelling of 157394985539 in words is "one hundred fifty-seven billion, three hundred ninety-four million, nine hundred eighty-five thousand, five hundred thirty-nine".