21470061352775 has 24 divisors (see below), whose sum is σ = 30502784348640. Its totient is φ = 14685243788160.

The previous prime is 21470061352709. The next prime is 21470061352793. The reversal of 21470061352775 is 57725316007412.

It is not a de Polignac number, because 21470061352775 - 2¹⁸ = 21470061090631 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154446980 + ... + 154585929.

It is an arithmetic number, because the mean of its divisors is an integer number (1270949347860).

Almost surely, 2^{21470061352775} is an apocalyptic number.

21470061352775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21470061352775 is a deficient number, since it is larger than the sum of its proper divisors (9032722995865).

21470061352775 is a wasteful number, since it uses less digits than its factorization.

21470061352775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309033323 (or 309033318 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 21470061352775 in words is "twenty-one trillion, four hundred seventy billion, sixty-one million, three hundred fifty-two thousand, seven hundred seventy-five".