21483976551825 has 12 divisors (see below), whose sum is σ = 35520174565808. Its totient is φ = 11458120827600.

The previous prime is 21483976551823. The next prime is 21483976551839. The reversal of 21483976551825 is 52815567938412.

It is a happy number.

It is not a de Polignac number, because 21483976551825 - 2¹ = 21483976551823 is a prime.

It is a super-2 number, since 2×21483976551825² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21483976551823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143226510271 + ... + 143226510420.

Almost surely, 2^{21483976551825} is an apocalyptic number.

21483976551825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21483976551825 is a deficient number, since it is larger than the sum of its proper divisors (14036198013983).

21483976551825 is a wasteful number, since it uses less digits than its factorization.

21483976551825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286453020704 (or 286453020699 counting only the distinct ones).

The product of its digits is 145152000, while the sum is 66.

The spelling of 21483976551825 in words is "twenty-one trillion, four hundred eighty-three billion, nine hundred seventy-six million, five hundred fifty-one thousand, eight hundred twenty-five".