21836276534 has 4 divisors (see below), whose sum is σ = 32754414804. Its totient is φ = 10918138266.

The previous prime is 21836276491. The next prime is 21836276573. The reversal of 21836276534 is 43567263812.

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

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, 5459069132 + ... + 5459069135.

It is an arithmetic number, because the mean of its divisors is an integer number (8188603701).

Almost surely, 2^21836276534 is an apocalyptic number.

21836276534 is a deficient number, since it is larger than the sum of its proper divisors (10918138270).

21836276534 is a wasteful number, since it uses less digits than its factorization.

21836276534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10918138269.

The product of its digits is 1451520, while the sum is 47.

The spelling of 21836276534 in words is "twenty-one billion, eight hundred thirty-six million, two hundred seventy-six thousand, five hundred thirty-four".