161011059457 has 8 divisors (see below), whose sum is σ = 162347128832. Its totient is φ = 159678540000.

The previous prime is 161011059437. The next prime is 161011059463. The reversal of 161011059457 is 754950110161.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 161011059457 - 2³⁵ = 126651321089 is a prime.

It is a super-2 number, since 2×161011059457² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161011059437) 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, 796353 + ... + 977854.

It is an arithmetic number, because the mean of its divisors is an integer number (20293391104).

Almost surely, 2^161011059457 is an apocalyptic number.

It is an amenable number.

161011059457 is a deficient number, since it is larger than the sum of its proper divisors (1336069375).

161011059457 is a wasteful number, since it uses less digits than its factorization.

161011059457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774959.

The product of its (nonzero) digits is 37800, while the sum is 40.

The spelling of 161011059457 in words is "one hundred sixty-one billion, eleven million, fifty-nine thousand, four hundred fifty-seven".