10661277620 has 48 divisors (see below), whose sum is σ = 25617005568. Its totient is φ = 3651018240.

The previous prime is 10661277619. The next prime is 10661277647. The reversal of 10661277620 is 2677216601.

It is a super-2 number, since 2×10661277620² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76700 + ... + 164940.

It is an arithmetic number, because the mean of its divisors is an integer number (533687616).

Almost surely, 2^10661277620 is an apocalyptic number.

10661277620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10661277620 is an abundant number, since it is smaller than the sum of its proper divisors (14955727948).

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

10661277620 is a wasteful number, since it uses less digits than its factorization.

10661277620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89120 (or 89118 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 10661277620 in words is "ten billion, six hundred sixty-one million, two hundred seventy-seven thousand, six hundred twenty".