10561764231220 has 24 divisors (see below), whose sum is σ = 22201176085704. Its totient is φ = 4220615940096.

The previous prime is 10561764231217. The next prime is 10561764231229. The reversal of 10561764231220 is 2213246716501.

It can be written as a sum of positive squares in 4 ways, for example, as 5637794355216 + 4923969876004 = 2374404^2 + 2219002^2 .

It is a super-2 number, since 2×10561764231220² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10561764231229) 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, 255588349 + ... + 255629668.

It is an arithmetic number, because the mean of its divisors is an integer number (925049003571).

Almost surely, 2^{10561764231220} is an apocalyptic number.

10561764231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10561764231220 is an abundant number, since it is smaller than the sum of its proper divisors (11639411854484).

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

10561764231220 is a wasteful number, since it uses less digits than its factorization.

10561764231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511219059 (or 511219057 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 10561764231220 in words is "ten trillion, five hundred sixty-one billion, seven hundred sixty-four million, two hundred thirty-one thousand, two hundred twenty".