10101661506 has 12 divisors (see below), whose sum is σ = 21886933302. Its totient is φ = 3367220496.

The previous prime is 10101661487. The next prime is 10101661513. The reversal of 10101661506 is 60516610101.

It can be written as a sum of positive squares in only one way, i.e., 9726890625 + 374770881 = 98625^2 + 19359^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10101661506.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280601691 + ... + 280601726.

Almost surely, 2^10101661506 is an apocalyptic number.

10101661506 is an abundant number, since it is smaller than the sum of its proper divisors (11785271796).

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

10101661506 is a wasteful number, since it uses less digits than its factorization.

10101661506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561203425 (or 561203422 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The spelling of 10101661506 in words is "ten billion, one hundred one million, six hundred sixty-one thousand, five hundred six".