157826378879 has 32 divisors (see below), whose sum is σ = 178685015040. Its totient is φ = 138310647552.

The previous prime is 157826378849. The next prime is 157826378893. The reversal of 157826378879 is 978873628751.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157826378879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157826378849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40393844 + ... + 40397750.

It is an arithmetic number, because the mean of its divisors is an integer number (5583906720).

Almost surely, 2^157826378879 is an apocalyptic number.

157826378879 is a deficient number, since it is larger than the sum of its proper divisors (20858636161).

157826378879 is a wasteful number, since it uses less digits than its factorization.

157826378879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4919.

The product of its digits is 284497920, while the sum is 71.

The spelling of 157826378879 in words is "one hundred fifty-seven billion, eight hundred twenty-six million, three hundred seventy-eight thousand, eight hundred seventy-nine".