101157799681 has 8 divisors (see below), whose sum is σ = 104661207720. Its totient is φ = 97655405568.

The previous prime is 101157799657. The next prime is 101157799711. The reversal of 101157799681 is 186997751101.

It can be written as a sum of positive squares in 4 ways, for example, as 30409779456 + 70748020225 = 174384^2 + 265985^2 .

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 101157799681 - 2⁵ = 101157799649 is a prime.

It is a super-2 number, since 2×101157799681² (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 (101157799621) 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, 47646 + ... + 452311.

It is an arithmetic number, because the mean of its divisors is an integer number (13082650965).

Almost surely, 2^101157799681 is an apocalyptic number.

It is an amenable number.

101157799681 is a deficient number, since it is larger than the sum of its proper divisors (3503408039).

101157799681 is an equidigital number, since it uses as much as digits as its factorization.

101157799681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506963.

The product of its (nonzero) digits is 952560, while the sum is 55.

The spelling of 101157799681 in words is "one hundred one billion, one hundred fifty-seven million, seven hundred ninety-nine thousand, six hundred eighty-one".