102387019873 has 2 divisors, whose sum is σ = 102387019874. Its totient is φ = 102387019872.

The previous prime is 102387019871. The next prime is 102387019901. The reversal of 102387019873 is 378910783201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69017594944 + 33369424929 = 262712^2 + 182673^2 .

It is a cyclic number.

It is not a de Polignac number, because 102387019873 - 2¹ = 102387019871 is a prime.

It is a super-2 number, since 2×102387019873² (a number of 23 digits) contains 22 as substring.

Together with 102387019871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102387019871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51193509936 + 51193509937.

It is an arithmetic number, because the mean of its divisors is an integer number (51193509937).

Almost surely, 2^102387019873 is an apocalyptic number.

It is an amenable number.

102387019873 is a deficient number, since it is larger than the sum of its proper divisors (1).

102387019873 is an equidigital number, since it uses as much as digits as its factorization.

102387019873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 102387019873 in words is "one hundred two billion, three hundred eighty-seven million, nineteen thousand, eight hundred seventy-three".