21580077527234 has 8 divisors (see below), whose sum is σ = 32371248317628. Its totient is φ = 10789661421360.

The previous prime is 21580077527231. The next prime is 21580077527263. The reversal of 21580077527234 is 43272577008512.

It can be written as a sum of positive squares in 2 ways, for example, as 21565779346609 + 14298180625 = 4643897^2 + 119575^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21580077527231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188599637 + ... + 188714024.

Almost surely, 2^{21580077527234} is an apocalyptic number.

21580077527234 is a deficient number, since it is larger than the sum of its proper divisors (10791170790394).

21580077527234 is a wasteful number, since it uses less digits than its factorization.

21580077527234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377342260.

The product of its (nonzero) digits is 6585600, while the sum is 53.

The spelling of 21580077527234 in words is "twenty-one trillion, five hundred eighty billion, seventy-seven million, five hundred twenty-seven thousand, two hundred thirty-four".