102107744787 has 4 divisors (see below), whose sum is σ = 136143659720. Its totient is φ = 68071829856.

The previous prime is 102107744747. The next prime is 102107744801. The reversal of 102107744787 is 787447701201.

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

It is not a de Polignac number, because 102107744787 - 2¹⁸ = 102107482643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102107744737) 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, 17017957462 + ... + 17017957467.

It is an arithmetic number, because the mean of its divisors is an integer number (34035914930).

Almost surely, 2^102107744787 is an apocalyptic number.

102107744787 is a deficient number, since it is larger than the sum of its proper divisors (34035914933).

102107744787 is an equidigital number, since it uses as much as digits as its factorization.

102107744787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34035914932.

The product of its (nonzero) digits is 614656, while the sum is 48.

The spelling of 102107744787 in words is "one hundred two billion, one hundred seven million, seven hundred forty-four thousand, seven hundred eighty-seven".