161237954942 has 32 divisors (see below), whose sum is σ = 255096760320. Its totient is φ = 76341964320.

The previous prime is 161237954921. The next prime is 161237954959. The reversal of 161237954942 is 249459732161.

It is a super-2 number, since 2×161237954942² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493067 + ... + 752057.

It is an arithmetic number, because the mean of its divisors is an integer number (7971773760).

Almost surely, 2^161237954942 is an apocalyptic number.

161237954942 is a deficient number, since it is larger than the sum of its proper divisors (93858805378).

161237954942 is a wasteful number, since it uses less digits than its factorization.

161237954942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259256.

The product of its digits is 3265920, while the sum is 53.

The spelling of 161237954942 in words is "one hundred sixty-one billion, two hundred thirty-seven million, nine hundred fifty-four thousand, nine hundred forty-two".