10661624250 has 128 divisors (see below), whose sum is σ = 27343540224. Its totient is φ = 2765448000.

The previous prime is 10661624249. The next prime is 10661624291. The reversal of 10661624250 is 5242616601.

It is a super-2 number, since 2×10661624250² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10029219 + ... + 10030281.

It is an arithmetic number, because the mean of its divisors is an integer number (213621408).

Almost surely, 2^10661624250 is an apocalyptic number.

10661624250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10661624250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13671770112).

10661624250 is an abundant number, since it is smaller than the sum of its proper divisors (16681915974).

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

10661624250 is a wasteful number, since it uses less digits than its factorization.

10661624250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437 (or 1427 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 10661624250 in words is "ten billion, six hundred sixty-one million, six hundred twenty-four thousand, two hundred fifty".