100257799987 has 2 divisors, whose sum is σ = 100257799988. Its totient is φ = 100257799986.

The previous prime is 100257799979. The next prime is 100257800039. The reversal of 100257799987 is 789997752001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100257799987 - 2³ = 100257799979 is a prime.

It is not a weakly prime, because it can be changed into another prime (100257799937) 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 as a sum of consecutive naturals, namely, 50128899993 + 50128899994.

It is an arithmetic number, because the mean of its divisors is an integer number (50128899994).

Almost surely, 2^100257799987 is an apocalyptic number.

100257799987 is a deficient number, since it is larger than the sum of its proper divisors (1).

100257799987 is an equidigital number, since it uses as much as digits as its factorization.

100257799987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20003760, while the sum is 64.

The spelling of 100257799987 in words is "one hundred billion, two hundred fifty-seven million, seven hundred ninety-nine thousand, nine hundred eighty-seven".