161511740942 has 8 divisors (see below), whose sum is σ = 242961789000. Its totient is φ = 80524477944.

The previous prime is 161511740899. The next prime is 161511740981. The reversal of 161511740942 is 249047115161.

161511740942 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 161511740942.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115695392 + ... + 115696787.

It is an arithmetic number, because the mean of its divisors is an integer number (30370223625).

Almost surely, 2^161511740942 is an apocalyptic number.

161511740942 is a deficient number, since it is larger than the sum of its proper divisors (81450048058).

161511740942 is a wasteful number, since it uses less digits than its factorization.

161511740942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231392530.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 161511740942 in words is "one hundred sixty-one billion, five hundred eleven million, seven hundred forty thousand, nine hundred forty-two".