21477430752260 has 48 divisors (see below), whose sum is σ = 51546574267776. Its totient is φ = 7363584763392.

The previous prime is 21477430752233. The next prime is 21477430752289. The reversal of 21477430752260 is 6225703477412.

It is a happy number.

It is a super-2 number, since 2×21477430752260² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21477430752199 and 21477430752208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9008924 + ... + 11140716.

It is an arithmetic number, because the mean of its divisors is an integer number (1073886963912).

Almost surely, 2^{21477430752260} is an apocalyptic number.

21477430752260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21477430752260 is an abundant number, since it is smaller than the sum of its proper divisors (30069143515516).

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

21477430752260 is a wasteful number, since it uses less digits than its factorization.

21477430752260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203772 (or 2203770 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 50.

The spelling of 21477430752260 in words is "twenty-one trillion, four hundred seventy-seven billion, four hundred thirty million, seven hundred fifty-two thousand, two hundred sixty".