157160878561 has 4 divisors (see below), whose sum is σ = 157164378372. Its totient is φ = 157157378752.

The previous prime is 157160878549. The next prime is 157160878573. The reversal of 157160878561 is 165878061751.

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

It is an interprime number because it is at equal distance from previous prime (157160878549) and next prime (157160878573).

It can be written as a sum of positive squares in 2 ways, for example, as 69474416400 + 87686462161 = 263580^2 + 296119^2 .

It is a cyclic number.

It is not a de Polignac number, because 157160878561 - 2¹¹ = 157160876513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157160878261) 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, 1681660 + ... + 1772653.

It is an arithmetic number, because the mean of its divisors is an integer number (39291094593).

Almost surely, 2^157160878561 is an apocalyptic number.

It is an amenable number.

157160878561 is a deficient number, since it is larger than the sum of its proper divisors (3499811).

157160878561 is an equidigital number, since it uses as much as digits as its factorization.

157160878561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3499810.

The product of its (nonzero) digits is 2822400, while the sum is 55.

The spelling of 157160878561 in words is "one hundred fifty-seven billion, one hundred sixty million, eight hundred seventy-eight thousand, five hundred sixty-one".