15102839861 has 2 divisors, whose sum is σ = 15102839862. Its totient is φ = 15102839860.

The previous prime is 15102839789. The next prime is 15102839863. The reversal of 15102839861 is 16893820151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15085980625 + 16859236 = 122825^2 + 4106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15102839861 is a prime.

Together with 15102839863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15102839863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7551419930 + 7551419931.

It is an arithmetic number, because the mean of its divisors is an integer number (7551419931).

Almost surely, 2^15102839861 is an apocalyptic number.

It is an amenable number.

15102839861 is a deficient number, since it is larger than the sum of its proper divisors (1).

15102839861 is an equidigital number, since it uses as much as digits as its factorization.

15102839861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 44.

The spelling of 15102839861 in words is "fifteen billion, one hundred two million, eight hundred thirty-nine thousand, eight hundred sixty-one".