102661516455 has 8 divisors (see below), whose sum is σ = 164258426352. Its totient is φ = 54752808768.

The previous prime is 102661516403. The next prime is 102661516459. The reversal of 102661516455 is 554615166201.

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

It is not a de Polignac number, because 102661516455 - 2¹⁰ = 102661515431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102661516459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3422050534 + ... + 3422050563.

It is an arithmetic number, because the mean of its divisors is an integer number (20532303294).

Almost surely, 2^102661516455 is an apocalyptic number.

102661516455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102661516455 is a deficient number, since it is larger than the sum of its proper divisors (61596909897).

102661516455 is an equidigital number, since it uses as much as digits as its factorization.

102661516455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6844101105.

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 102661516455 in words is "one hundred two billion, six hundred sixty-one million, five hundred sixteen thousand, four hundred fifty-five".