161389207959 has 16 divisors (see below), whose sum is σ = 246029429760. Its totient is φ = 92183772960.

The previous prime is 161389207951. The next prime is 161389207961. The reversal of 161389207959 is 959702983161.

It is not a de Polignac number, because 161389207959 - 2³ = 161389207951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161389207951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1558287 + ... + 1658624.

It is an arithmetic number, because the mean of its divisors is an integer number (15376839360).

Almost surely, 2^161389207959 is an apocalyptic number.

161389207959 is a deficient number, since it is larger than the sum of its proper divisors (84640221801).

161389207959 is a wasteful number, since it uses less digits than its factorization.

161389207959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219310.

The product of its (nonzero) digits is 7348320, while the sum is 60.

The spelling of 161389207959 in words is "one hundred sixty-one billion, three hundred eighty-nine million, two hundred seven thousand, nine hundred fifty-nine".