102561055643 has 8 divisors (see below), whose sum is σ = 109788820800. Its totient is φ = 95516272008.

The previous prime is 102561055637. The next prime is 102561055691. The reversal of 102561055643 is 346550165201.

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

It is a cyclic number.

It is not a de Polignac number, because 102561055643 - 2²² = 102556861339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102561055597 and 102561055606.

It is not an unprimeable number, because it can be changed into a prime (102561055693) 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, 45744221 + ... + 45746462.

It is an arithmetic number, because the mean of its divisors is an integer number (13723602600).

Almost surely, 2^102561055643 is an apocalyptic number.

102561055643 is a deficient number, since it is larger than the sum of its proper divisors (7227765157).

102561055643 is an equidigital number, since it uses as much as digits as its factorization.

102561055643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91490761.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 102561055643 in words is "one hundred two billion, five hundred sixty-one million, fifty-five thousand, six hundred forty-three".