21527437566134 has 8 divisors (see below), whose sum is σ = 32292848903760. Its totient is φ = 10763154598216.

The previous prime is 21527437566031. The next prime is 21527437566149. The reversal of 21527437566134 is 43166573472512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21527437566134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282044729 + ... + 282121044.

It is an arithmetic number, because the mean of its divisors is an integer number (4036606112970).

Almost surely, 2^{21527437566134} is an apocalyptic number.

21527437566134 is a deficient number, since it is larger than the sum of its proper divisors (10765411337626).

21527437566134 is a wasteful number, since it uses less digits than its factorization.

21527437566134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564184854.

The product of its digits is 25401600, while the sum is 56.

The spelling of 21527437566134 in words is "twenty-one trillion, five hundred twenty-seven billion, four hundred thirty-seven million, five hundred sixty-six thousand, one hundred thirty-four".