21466253134 has 4 divisors (see below), whose sum is σ = 32199379704. Its totient is φ = 10733126566.

The previous prime is 21466253113. The next prime is 21466253161. The reversal of 21466253134 is 43135266412.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21466253134² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21466253093 and 21466253102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5366563282 + ... + 5366563285.

It is an arithmetic number, because the mean of its divisors is an integer number (8049844926).

Almost surely, 2^21466253134 is an apocalyptic number.

21466253134 is a deficient number, since it is larger than the sum of its proper divisors (10733126570).

21466253134 is a wasteful number, since it uses less digits than its factorization.

21466253134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10733126569.

The product of its digits is 103680, while the sum is 37.

The spelling of 21466253134 in words is "twenty-one billion, four hundred sixty-six million, two hundred fifty-three thousand, one hundred thirty-four".