102168388834450 has 12 divisors (see below), whose sum is σ = 190033203232170. Its totient is φ = 40867355533760.

The previous prime is 102168388834433. The next prime is 102168388834451. The reversal of 102168388834450 is 54438883861201.

It can be written as a sum of positive squares in 3 ways, for example, as 52638928262361 + 49529460572089 = 7255269^2 + 7037717^2 .

It is not an unprimeable number, because it can be changed into a prime (102168388834451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1021683888295 + ... + 1021683888394.

Almost surely, 2^{102168388834450} is an apocalyptic number.

102168388834450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102168388834450 is a deficient number, since it is larger than the sum of its proper divisors (87864814397720).

102168388834450 is a wasteful number, since it uses less digits than its factorization.

102168388834450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043367776701 (or 2043367776696 counting only the distinct ones).

The product of its (nonzero) digits is 35389440, while the sum is 61.

The spelling of 102168388834450 in words is "one hundred two trillion, one hundred sixty-eight billion, three hundred eighty-eight million, eight hundred thirty-four thousand, four hundred fifty".