157579978659 has 8 divisors (see below), whose sum is σ = 210135366672. Its totient is φ = 105038954880.

The previous prime is 157579978657. The next prime is 157579978739. The reversal of 157579978659 is 956879975751.

It is a happy number.

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

It is not a de Polignac number, because 157579978659 - 2¹ = 157579978657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157579978657) 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, 3565434 + ... + 3609359.

It is an arithmetic number, because the mean of its divisors is an integer number (26266920834).

Almost surely, 2^157579978659 is an apocalyptic number.

157579978659 is a deficient number, since it is larger than the sum of its proper divisors (52555388013).

157579978659 is an equidigital number, since it uses as much as digits as its factorization.

157579978659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7182117.

The product of its digits is 1500282000, while the sum is 78.

The spelling of 157579978659 in words is "one hundred fifty-seven billion, five hundred seventy-nine million, nine hundred seventy-eight thousand, six hundred fifty-nine".