21355352461463 has 8 divisors (see below), whose sum is σ = 22284223422048. Its totient is φ = 20426512948864.

The previous prime is 21355352461459. The next prime is 21355352461493. The reversal of 21355352461463 is 36416425355312.

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 21355352461463 - 2² = 21355352461459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21355352461493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6469070 + ... + 9195627.

It is an arithmetic number, because the mean of its divisors is an integer number (2785527927756).

Almost surely, 2^{21355352461463} is an apocalyptic number.

21355352461463 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21355352461463 is a deficient number, since it is larger than the sum of its proper divisors (928870960585).

21355352461463 is a wasteful number, since it uses less digits than its factorization.

21355352461463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15723993.

The product of its digits is 7776000, while the sum is 50.

The spelling of 21355352461463 in words is "twenty-one trillion, three hundred fifty-five billion, three hundred fifty-two million, four hundred sixty-one thousand, four hundred sixty-three".