100105506060557 has 4 divisors (see below), whose sum is σ = 100226260592220. Its totient is φ = 99984751528896.

The previous prime is 100105506060533. The next prime is 100105506060587. The reversal of 100105506060557 is 755060605501001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66176500391236 + 33929005669321 = 8134894^2 + 5824861^2 .

It is a cyclic number.

It is not a de Polignac number, because 100105506060557 - 2²⁴ = 100105489283341 is a prime.

It is a super-2 number, since 2×100105506060557² (a number of 29 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 (100105506060587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60377264588 + ... + 60377266245.

It is an arithmetic number, because the mean of its divisors is an integer number (25056565148055).

Almost surely, 2^{100105506060557} is an apocalyptic number.

It is an amenable number.

100105506060557 is a deficient number, since it is larger than the sum of its proper divisors (120754531663).

100105506060557 is an equidigital number, since it uses as much as digits as its factorization.

100105506060557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120754531662.

The product of its (nonzero) digits is 157500, while the sum is 41.

The spelling of 100105506060557 in words is "one hundred trillion, one hundred five billion, five hundred six million, sixty thousand, five hundred fifty-seven".