10666131840 has 1920 divisors, whose sum is σ = 53184146400. Its totient is φ = 2006581248.

The previous prime is 10666131829. The next prime is 10666131841. The reversal of 10666131840 is 4813166601.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a super-2 number, since 2×10666131840² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 10666131795 and 10666131804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10666131841) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 561375351 + ... + 561375369.

Almost surely, 2^10666131840 is an apocalyptic number.

10666131840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10666131840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26592073200).

10666131840 is an abundant number, since it is smaller than the sum of its proper divisors (42518014560).

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

10666131840 is a wasteful number, since it uses less digits than its factorization.

10666131840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 10666131840 in words is "ten billion, six hundred sixty-six million, one hundred thirty-one thousand, eight hundred forty".