10668156920 has 64 divisors (see below), whose sum is σ = 24850260000. Its totient is φ = 4116930048.

The previous prime is 10668156869. The next prime is 10668156977. The reversal of 10668156920 is 2965186601.

It is a super-2 number, since 2×10668156920² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1968134 + ... + 1973546.

Almost surely, 2^10668156920 is an apocalyptic number.

10668156920 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 10668156920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12425130000).

10668156920 is an abundant number, since it is smaller than the sum of its proper divisors (14182103080).

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

10668156920 is a wasteful number, since it uses less digits than its factorization.

10668156920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7152 (or 7148 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 10668156920 in words is "ten billion, six hundred sixty-eight million, one hundred fifty-six thousand, nine hundred twenty".