102561922418 has 6 divisors (see below), whose sum is σ = 153843562989. Its totient is φ = 51280734756.

The previous prime is 102561922409. The next prime is 102561922459. The reversal of 102561922418 is 814229165201.

It can be written as a sum of positive squares in 2 ways, for example, as 99750483889 + 2811438529 = 315833^2 + 53023^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=226453.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 339680 + ... + 566132.

Almost surely, 2^102561922418 is an apocalyptic number.

102561922418 is a deficient number, since it is larger than the sum of its proper divisors (51281640571).

102561922418 is an frugal number, since it uses more digits than its factorization.

102561922418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452908 (or 226455 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 102561922418 in words is "one hundred two billion, five hundred sixty-one million, nine hundred twenty-two thousand, four hundred eighteen".