161256416707 has 8 divisors (see below), whose sum is σ = 171298256976. Its totient is φ = 151276372992.

The previous prime is 161256416701. The next prime is 161256416723. The reversal of 161256416707 is 707614652161.

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

It is not a de Polignac number, because 161256416707 - 2¹¹ = 161256414659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161256416701) 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, 15443758 + ... + 15454195.

It is an arithmetic number, because the mean of its divisors is an integer number (21412282122).

Almost surely, 2^161256416707 is an apocalyptic number.

161256416707 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

161256416707 is a deficient number, since it is larger than the sum of its proper divisors (10041840269).

161256416707 is a wasteful number, since it uses less digits than its factorization.

161256416707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30898277.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 161256416707 in words is "one hundred sixty-one billion, two hundred fifty-six million, four hundred sixteen thousand, seven hundred seven".