100381940569 has 2 divisors, whose sum is σ = 100381940570. Its totient is φ = 100381940568.

The previous prime is 100381940567. The next prime is 100381940611. The reversal of 100381940569 is 965049183001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57234342169 + 43147598400 = 239237^2 + 207720^2 .

It is a cyclic number.

It is not a de Polignac number, because 100381940569 - 2¹ = 100381940567 is a prime.

It is a super-2 number, since 2×100381940569² (a number of 23 digits) contains 22 as substring.

Together with 100381940567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (100381940567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50190970284 + 50190970285.

It is an arithmetic number, because the mean of its divisors is an integer number (50190970285).

Almost surely, 2^100381940569 is an apocalyptic number.

It is an amenable number.

100381940569 is a deficient number, since it is larger than the sum of its proper divisors (1).

100381940569 is an equidigital number, since it uses as much as digits as its factorization.

100381940569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 100381940569 in words is "one hundred billion, three hundred eighty-one million, nine hundred forty thousand, five hundred sixty-nine".