21463136549340 has 24 divisors (see below), whose sum is σ = 60096782338320. Its totient is φ = 5723503079808.

The previous prime is 21463136549297. The next prime is 21463136549353. The reversal of 21463136549340 is 4394563136412.

It is a super-2 number, since 2×21463136549340² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 178859471185 + ... + 178859471304.

It is an arithmetic number, because the mean of its divisors is an integer number (2504032597430).

Almost surely, 2^{21463136549340} is an apocalyptic number.

21463136549340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21463136549340 is an abundant number, since it is smaller than the sum of its proper divisors (38633645788980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21463136549340 is a wasteful number, since it uses less digits than its factorization.

21463136549340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357718942501 (or 357718942499 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 51.

The spelling of 21463136549340 in words is "twenty-one trillion, four hundred sixty-three billion, one hundred thirty-six million, five hundred forty-nine thousand, three hundred forty".