102690840490863 has 4 divisors (see below), whose sum is σ = 136921120654488. Its totient is φ = 68460560327240.

The previous prime is 102690840490853. The next prime is 102690840490919. The reversal of 102690840490863 is 368094048096201.

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 102690840490863 - 2²⁰ = 102690839442287 is a prime.

It is a super-3 number, since 3×102690840490863³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102690840490797 and 102690840490806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102690840490853) 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, 17115140081808 + ... + 17115140081813.

It is an arithmetic number, because the mean of its divisors is an integer number (34230280163622).

Almost surely, 2^{102690840490863} is an apocalyptic number.

102690840490863 is a deficient number, since it is larger than the sum of its proper divisors (34230280163625).

102690840490863 is an equidigital number, since it uses as much as digits as its factorization.

102690840490863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34230280163624.

The product of its (nonzero) digits is 17915904, while the sum is 60.

The spelling of 102690840490863 in words is "one hundred two trillion, six hundred ninety billion, eight hundred forty million, four hundred ninety thousand, eight hundred sixty-three".