21032604260 has 12 divisors (see below), whose sum is σ = 44168468988. Its totient is φ = 8413041696.

The previous prime is 21032604259. The next prime is 21032604269. The reversal of 21032604260 is 6240623012.

It can be written as a sum of positive squares in 2 ways, for example, as 7787356516 + 13245247744 = 88246^2 + 115088^2 .

It is not an unprimeable number, because it can be changed into a prime (21032604269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525815087 + ... + 525815126.

It is an arithmetic number, because the mean of its divisors is an integer number (3680705749).

Almost surely, 2^21032604260 is an apocalyptic number.

21032604260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21032604260 is an abundant number, since it is smaller than the sum of its proper divisors (23135864728).

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

21032604260 is a wasteful number, since it uses less digits than its factorization.

21032604260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051630222 (or 1051630220 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The spelling of 21032604260 in words is "twenty-one billion, thirty-two million, six hundred four thousand, two hundred sixty".