102561244326502 has 8 divisors (see below), whose sum is σ = 165675856219776. Its totient is φ = 47335958919912.

The previous prime is 102561244326487. The next prime is 102561244326511. The reversal of 102561244326502 is 205623442165201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1972331621638 + ... + 1972331621689.

It is an arithmetic number, because the mean of its divisors is an integer number (20709482027472).

Almost surely, 2^{102561244326502} is an apocalyptic number.

102561244326502 is a deficient number, since it is larger than the sum of its proper divisors (63114611893274).

102561244326502 is a wasteful number, since it uses less digits than its factorization.

102561244326502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3944663243342.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 102561244326502 in words is "one hundred two trillion, five hundred sixty-one billion, two hundred forty-four million, three hundred twenty-six thousand, five hundred two".