100261561165 has 8 divisors (see below), whose sum is σ = 120333534048. Its totient is φ = 80196141840.

The previous prime is 100261561133. The next prime is 100261561193. The reversal of 100261561165 is 561165162001.

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

It is not a de Polignac number, because 100261561165 - 2⁵ = 100261561133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100261561165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1604667 + ... + 1665976.

It is an arithmetic number, because the mean of its divisors is an integer number (15041691756).

Almost surely, 2^100261561165 is an apocalyptic number.

It is an amenable number.

100261561165 is a deficient number, since it is larger than the sum of its proper divisors (20071972883).

100261561165 is an equidigital number, since it uses as much as digits as its factorization.

100261561165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276779.

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 100261561165 in words is "one hundred billion, two hundred sixty-one million, five hundred sixty-one thousand, one hundred sixty-five".