102866312309 has 4 divisors (see below), whose sum is σ = 106184580480. Its totient is φ = 99548044140.

The previous prime is 102866312279. The next prime is 102866312317. The reversal of 102866312309 is 903213668201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102866312309 - 2²⁸ = 102597876853 is a prime.

It is a super-2 number, since 2×102866312309² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102866312009) 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, 1659134039 + ... + 1659134100.

It is an arithmetic number, because the mean of its divisors is an integer number (26546145120).

Almost surely, 2^102866312309 is an apocalyptic number.

It is an amenable number.

102866312309 is a deficient number, since it is larger than the sum of its proper divisors (3318268171).

102866312309 is an equidigital number, since it uses as much as digits as its factorization.

102866312309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318268170.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 102866312309 in words is "one hundred two billion, eight hundred sixty-six million, three hundred twelve thousand, three hundred nine".