21348846515 has 8 divisors (see below), whose sum is σ = 25622485920. Its totient is φ = 17076497152.

The previous prime is 21348846503. The next prime is 21348846559. The reversal of 21348846515 is 51564884312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21348846515 - 2⁴ = 21348846499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21348846515.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285719 + ... + 352608.

It is an arithmetic number, because the mean of its divisors is an integer number (3202810740).

Almost surely, 2^21348846515 is an apocalyptic number.

21348846515 is a deficient number, since it is larger than the sum of its proper divisors (4273639405).

21348846515 is an equidigital number, since it uses as much as digits as its factorization.

21348846515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645021.

The product of its digits is 921600, while the sum is 47.

The spelling of 21348846515 in words is "twenty-one billion, three hundred forty-eight million, eight hundred forty-six thousand, five hundred fifteen".