10661582390 has 16 divisors (see below), whose sum is σ = 19204769520. Its totient is φ = 4261539360.

The previous prime is 10661582389. The next prime is 10661582401. The reversal of 10661582390 is 9328516601.

It is a super-2 number, since 2×10661582390² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 372200 + ... + 399819.

It is an arithmetic number, because the mean of its divisors is an integer number (1200298095).

Almost surely, 2^10661582390 is an apocalyptic number.

10661582390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10661582390 is a deficient number, since it is larger than the sum of its proper divisors (8543187130).

10661582390 is a wasteful number, since it uses less digits than its factorization.

10661582390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773407.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 10661582390 in words is "ten billion, six hundred sixty-one million, five hundred eighty-two thousand, three hundred ninety".