661110150 has 24 divisors (see below), whose sum is σ = 1639553544. Its totient is φ = 176296000.

The previous prime is 661110143. The next prime is 661110167. The reversal of 661110150 is 51011166.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2203551 + ... + 2203850.

It is an arithmetic number, because the mean of its divisors is an integer number (68314731).

Almost surely, 2^661110150 is an apocalyptic number.

661110150 is an abundant number, since it is smaller than the sum of its proper divisors (978443394).

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

661110150 is a wasteful number, since it uses less digits than its factorization.

661110150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4407416 (or 4407411 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 661110150 is about 25712.0623443550. The cubic root of 661110150 is about 871.1466582107.

It can be divided in two parts, 6611 and 10150, that added together give a palindrome (16761).

The spelling of 661110150 in words is "six hundred sixty-one million, one hundred ten thousand, one hundred fifty".