21480874395 has 32 divisors (see below), whose sum is σ = 34479903744. Its totient is φ = 11419699200.

The previous prime is 21480874381. The next prime is 21480874409. The reversal of 21480874395 is 59347808412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21480874381) and next prime (21480874409).

It is not a de Polignac number, because 21480874395 - 2⁸ = 21480874139 is a prime.

It is a super-2 number, since 2×21480874395² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7801339 + ... + 7804091.

It is an arithmetic number, because the mean of its divisors is an integer number (1077496992).

Almost surely, 2^21480874395 is an apocalyptic number.

21480874395 is a deficient number, since it is larger than the sum of its proper divisors (12999029349).

21480874395 is a wasteful number, since it uses less digits than its factorization.

21480874395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 21480874395 in words is "twenty-one billion, four hundred eighty million, eight hundred seventy-four thousand, three hundred ninety-five".