100561045051 has 8 divisors (see below), whose sum is σ = 100781785664. Its totient is φ = 100340440200.

The previous prime is 100561045043. The next prime is 100561045063. The reversal of 100561045051 is 150540165001.

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 100561045051 - 2³ = 100561045043 is a prime.

It is a super-2 number, since 2×100561045051² (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 (100561045021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1527256 + ... + 1591738.

It is an arithmetic number, because the mean of its divisors is an integer number (12597723208).

Almost surely, 2^100561045051 is an apocalyptic number.

100561045051 is a deficient number, since it is larger than the sum of its proper divisors (220740613).

100561045051 is an equidigital number, since it uses as much as digits as its factorization.

100561045051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67881.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 100561045051 in words is "one hundred billion, five hundred sixty-one million, forty-five thousand, fifty-one".