21364533454 has 16 divisors (see below), whose sum is σ = 37016625456. Its totient is φ = 9139907200.

The previous prime is 21364533419. The next prime is 21364533461. The reversal of 21364533454 is 45433546312.

It is a super-3 number, since 3×21364533454³ (a number of 32 digits) contains 333 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, 28561837 + ... + 28562584.

It is an arithmetic number, because the mean of its divisors is an integer number (2313539091).

Almost surely, 2^21364533454 is an apocalyptic number.

21364533454 is a deficient number, since it is larger than the sum of its proper divisors (15652092002).

21364533454 is a wasteful number, since it uses less digits than its factorization.

21364533454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57124451.

The product of its digits is 518400, while the sum is 40.

The spelling of 21364533454 in words is "twenty-one billion, three hundred sixty-four million, five hundred thirty-three thousand, four hundred fifty-four".