245661305555 has 8 divisors (see below), whose sum is σ = 294796364544. Its totient is φ = 196527179200.

The previous prime is 245661305507. The next prime is 245661305573. The reversal of 245661305555 is 555503166542.

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

It is not a de Polignac number, because 245661305555 - 2²⁰ = 245660256979 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651470 + ... + 956940.

It is an arithmetic number, because the mean of its divisors is an integer number (36849545568).

Almost surely, 2^245661305555 is an apocalyptic number.

245661305555 is a deficient number, since it is larger than the sum of its proper divisors (49135058989).

245661305555 is a wasteful number, since it uses less digits than its factorization.

245661305555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466317.

The product of its (nonzero) digits is 2700000, while the sum is 47.

The spelling of 245661305555 in words is "two hundred forty-five billion, six hundred sixty-one million, three hundred five thousand, five hundred fifty-five".