161396215914 has 16 divisors (see below), whose sum is σ = 323750276928. Its totient is φ = 53639097792.

The previous prime is 161396215909. The next prime is 161396215919. The reversal of 161396215914 is 419512693161.

It is an interprime number because it is at equal distance from previous prime (161396215909) and next prime (161396215919).

It is a super-2 number, since 2×161396215914² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161396215919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39908022 + ... + 39912065.

It is an arithmetic number, because the mean of its divisors is an integer number (20234392308).

Almost surely, 2^161396215914 is an apocalyptic number.

161396215914 is an abundant number, since it is smaller than the sum of its proper divisors (162354061014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161396215914 is a wasteful number, since it uses less digits than its factorization.

161396215914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79820429.

The product of its digits is 349920, while the sum is 48.

The spelling of 161396215914 in words is "one hundred sixty-one billion, three hundred ninety-six million, two hundred fifteen thousand, nine hundred fourteen".