157321432667 has 16 divisors (see below), whose sum is σ = 187731878400. Its totient is φ = 131710954536.

The previous prime is 157321432661. The next prime is 157321432703. The reversal of 157321432667 is 766234123751.

It is a happy number.

It is not a de Polignac number, because 157321432667 - 2¹² = 157321428571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157321432661) 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 15 ways as a sum of consecutive naturals, for example, 5318543 + ... + 5348040.

It is an arithmetic number, because the mean of its divisors is an integer number (11733242400).

Almost surely, 2^157321432667 is an apocalyptic number.

157321432667 is a deficient number, since it is larger than the sum of its proper divisors (30410445733).

157321432667 is an equidigital number, since it uses as much as digits as its factorization.

157321432667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10666647 (or 10666633 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 47.

The spelling of 157321432667 in words is "one hundred fifty-seven billion, three hundred twenty-one million, four hundred thirty-two thousand, six hundred sixty-seven".