102938242561 has 16 divisors (see below), whose sum is σ = 129349140480. Its totient is φ = 79580022480.

The previous prime is 102938242543. The next prime is 102938242571. The reversal of 102938242561 is 165242839201.

It is not a de Polignac number, because 102938242561 - 2¹⁷ = 102938111489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102938242571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5253451 + ... + 5273008.

It is an arithmetic number, because the mean of its divisors is an integer number (8084321280).

Almost surely, 2^102938242561 is an apocalyptic number.

102938242561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102938242561 is a deficient number, since it is larger than the sum of its proper divisors (26410897919).

102938242561 is a wasteful number, since it uses less digits than its factorization.

102938242561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526604.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 102938242561 in words is "one hundred two billion, nine hundred thirty-eight million, two hundred forty-two thousand, five hundred sixty-one".