161751260042 has 32 divisors (see below), whose sum is σ = 251882763264. Its totient is φ = 77820624000.

The previous prime is 161751260029. The next prime is 161751260093. The reversal of 161751260042 is 240062157161.

It is a junction number, because it is equal to n+sod(n) for n = 161751259984 and 161751260011.

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, 26293667 + ... + 26299817.

It is an arithmetic number, because the mean of its divisors is an integer number (7871336352).

Almost surely, 2^161751260042 is an apocalyptic number.

161751260042 is a deficient number, since it is larger than the sum of its proper divisors (90131503222).

161751260042 is a wasteful number, since it uses less digits than its factorization.

161751260042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8534.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 161751260042 in words is "one hundred sixty-one billion, seven hundred fifty-one million, two hundred sixty thousand, forty-two".