102815340877 has 4 divisors (see below), whose sum is σ = 105206395360. Its totient is φ = 100424286396.

The previous prime is 102815340811. The next prime is 102815340883. The reversal of 102815340877 is 778043518201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 778043518201 = 43 ⋅18094035307.

It is a cyclic number.

It is not a de Polignac number, because 102815340877 - 2¹⁹ = 102814816589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102815340377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195527177 + ... + 1195527262.

It is an arithmetic number, because the mean of its divisors is an integer number (26301598840).

Almost surely, 2^102815340877 is an apocalyptic number.

It is an amenable number.

102815340877 is a deficient number, since it is larger than the sum of its proper divisors (2391054483).

102815340877 is an equidigital number, since it uses as much as digits as its factorization.

102815340877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391054482.

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 102815340877 in words is "one hundred two billion, eight hundred fifteen million, three hundred forty thousand, eight hundred seventy-seven".