102615046540609 has 2 divisors, whose sum is σ = 102615046540610. Its totient is φ = 102615046540608.

The previous prime is 102615046540579. The next prime is 102615046540673. The reversal of 102615046540609 is 906045640516201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73845286115584 + 28769760425025 = 8593328^2 + 5363745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102615046540609 is a prime.

It is not a weakly prime, because it can be changed into another prime (102615046540309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51307523270304 + 51307523270305.

It is an arithmetic number, because the mean of its divisors is an integer number (51307523270305).

Almost surely, 2^{102615046540609} is an apocalyptic number.

It is an amenable number.

102615046540609 is a deficient number, since it is larger than the sum of its proper divisors (1).

102615046540609 is an equidigital number, since it uses as much as digits as its factorization.

102615046540609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 102615046540609 in words is "one hundred two trillion, six hundred fifteen billion, forty-six million, five hundred forty thousand, six hundred nine".