661110017050 has 48 divisors (see below), whose sum is σ = 1406139501312. Its totient is φ = 226535889600.

The previous prime is 661110017017. The next prime is 661110017077. The reversal of 661110017050 is 50710011166.

661110017050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66879 + ... + 1151821.

It is an arithmetic number, because the mean of its divisors is an integer number (29294572944).

Almost surely, 2^661110017050 is an apocalyptic number.

661110017050 is an abundant number, since it is smaller than the sum of its proper divisors (745029484262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

661110017050 is a wasteful number, since it uses less digits than its factorization.

661110017050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086703 (or 1086698 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 28.

The spelling of 661110017050 in words is "six hundred sixty-one billion, one hundred ten million, seventeen thousand, fifty".