100505056055993 has 4 divisors (see below), whose sum is σ = 101179586633700. Its totient is φ = 99830525478288.

The previous prime is 100505056055977. The next prime is 100505056056001. The reversal of 100505056055993 is 399550650505001.

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 39950325673129 + 60554730382864 = 6320627^2 + 7781692^2 .

It is a cyclic number.

It is not a de Polignac number, because 100505056055993 - 2⁴ = 100505056055977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100505056055693) 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, 337265288630 + ... + 337265288927.

It is an arithmetic number, because the mean of its divisors is an integer number (25294896658425).

Almost surely, 2^{100505056055993} is an apocalyptic number.

It is an amenable number.

100505056055993 is a deficient number, since it is larger than the sum of its proper divisors (674530577707).

100505056055993 is an equidigital number, since it uses as much as digits as its factorization.

100505056055993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674530577706.

The product of its (nonzero) digits is 4556250, while the sum is 53.

The spelling of 100505056055993 in words is "one hundred trillion, five hundred five billion, fifty-six million, fifty-five thousand, nine hundred ninety-three".