102649370539 has 4 divisors (see below), whose sum is σ = 108687568824. Its totient is φ = 96611172256.

The previous prime is 102649370513. The next prime is 102649370597. The reversal of 102649370539 is 935073946201.

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

It is a cyclic number.

It is not a de Polignac number, because 102649370539 - 2¹¹ = 102649368491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102649370492 and 102649370501.

It is not an unprimeable number, because it can be changed into a prime (102649370039) 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, 3019099117 + ... + 3019099150.

It is an arithmetic number, because the mean of its divisors is an integer number (27171892206).

Almost surely, 2^102649370539 is an apocalyptic number.

102649370539 is a deficient number, since it is larger than the sum of its proper divisors (6038198285).

102649370539 is an equidigital number, since it uses as much as digits as its factorization.

102649370539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6038198284.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 102649370539 in words is "one hundred two billion, six hundred forty-nine million, three hundred seventy thousand, five hundred thirty-nine".