161572068797 has 16 divisors (see below), whose sum is σ = 171718312320. Its totient is φ = 151498142208.

The previous prime is 161572068793. The next prime is 161572068799. The reversal of 161572068797 is 797860275161.

It is not a de Polignac number, because 161572068797 - 2² = 161572068793 is a prime.

It is a super-2 number, since 2×161572068797² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161572068793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5457248 + ... + 5486774.

It is an arithmetic number, because the mean of its divisors is an integer number (10732394520).

Almost surely, 2^161572068797 is an apocalyptic number.

161572068797 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

161572068797 is a deficient number, since it is larger than the sum of its proper divisors (10146243523).

161572068797 is a wasteful number, since it uses less digits than its factorization.

161572068797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30740.

The product of its (nonzero) digits is 8890560, while the sum is 59.

The spelling of 161572068797 in words is "one hundred sixty-one billion, five hundred seventy-two million, sixty-eight thousand, seven hundred ninety-seven".