100115500643 has 2 divisors, whose sum is σ = 100115500644. Its totient is φ = 100115500642.

The previous prime is 100115500637. The next prime is 100115500673. The reversal of 100115500643 is 346005511001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100115500643 - 2⁴ = 100115500627 is a prime.

It is a super-2 number, since 2×100115500643² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (100115500603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50057750321 + 50057750322.

It is an arithmetic number, because the mean of its divisors is an integer number (50057750322).

Almost surely, 2^100115500643 is an apocalyptic number.

100115500643 is a deficient number, since it is larger than the sum of its proper divisors (1).

100115500643 is an equidigital number, since it uses as much as digits as its factorization.

100115500643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 100115500643 in words is "one hundred billion, one hundred fifteen million, five hundred thousand, six hundred forty-three".