80157659 has 4 divisors (see below), whose sum is σ = 80906904. Its totient is φ = 79408416.

The previous prime is 80157643. The next prime is 80157667. The reversal of 80157659 is 95675108.

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 80157659 - 2⁴ = 80157643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80147659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374462 + ... + 374675.

It is an arithmetic number, because the mean of its divisors is an integer number (20226726).

Almost surely, 2^80157659 is an apocalyptic number.

80157659 is a deficient number, since it is larger than the sum of its proper divisors (749245).

80157659 is a wasteful number, since it uses less digits than its factorization.

80157659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749244.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 80157659 is about 8953.0809780768. The cubic root of 80157659 is about 431.1698072830.

The spelling of 80157659 in words is "eighty million, one hundred fifty-seven thousand, six hundred fifty-nine".