102861017038244 has 18 divisors (see below), whose sum is σ = 184290337597590. Its totient is φ = 50234450177856.

The previous prime is 102861017038237. The next prime is 102861017038267. The reversal of 102861017038244 is 442830710168201.

It can be written as a sum of positive squares in only one way, i.e., 89789610644644 + 13071406393600 = 9475738^2 + 3615440^2 .

It is a super-2 number, since 2×102861017038244² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6953820149 + ... + 6953834940.

It is an arithmetic number, because the mean of its divisors is an integer number (10238352088755).

Almost surely, 2^{102861017038244} is an apocalyptic number.

It is an amenable number.

102861017038244 is a deficient number, since it is larger than the sum of its proper divisors (81429320559346).

102861017038244 is a wasteful number, since it uses less digits than its factorization.

102861017038244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13907655179 (or 13907655134 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 102861017038244 in words is "one hundred two trillion, eight hundred sixty-one billion, seventeen million, thirty-eight thousand, two hundred forty-four".