10561448920 has 32 divisors (see below), whose sum is σ = 25923557520. Its totient is φ = 3840526720.

The previous prime is 10561448893. The next prime is 10561448923. The reversal of 10561448920 is 2984416501.

It is a super-2 number, since 2×10561448920² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10561448923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12001207 + ... + 12002086.

Almost surely, 2^10561448920 is an apocalyptic number.

10561448920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10561448920 is an abundant number, since it is smaller than the sum of its proper divisors (15362108600).

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

10561448920 is a wasteful number, since it uses less digits than its factorization.

10561448920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24003315 (or 24003311 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 10561448920 in words is "ten billion, five hundred sixty-one million, four hundred forty-eight thousand, nine hundred twenty".