161286775670 has 8 divisors (see below), whose sum is σ = 290316196224. Its totient is φ = 64514710264.

The previous prime is 161286775667. The next prime is 161286775693. The reversal of 161286775670 is 76577682161.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8064338774 + ... + 8064338793.

It is an arithmetic number, because the mean of its divisors is an integer number (36289524528).

Almost surely, 2^161286775670 is an apocalyptic number.

161286775670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161286775670 is a deficient number, since it is larger than the sum of its proper divisors (129029420554).

161286775670 is a wasteful number, since it uses less digits than its factorization.

161286775670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16128677574.

The product of its (nonzero) digits is 5927040, while the sum is 56.

The spelling of 161286775670 in words is "one hundred sixty-one billion, two hundred eighty-six million, seven hundred seventy-five thousand, six hundred seventy".