21027150824 has 64 divisors (see below), whose sum is σ = 40479915840. Its totient is φ = 10236948480.

The previous prime is 21027150821. The next prime is 21027150877. The reversal of 21027150824 is 42805172012.

It is not an unprimeable number, because it can be changed into a prime (21027150821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18723527 + ... + 18724649.

It is an arithmetic number, because the mean of its divisors is an integer number (632498685).

Almost surely, 2^21027150824 is an apocalyptic number.

It is an amenable number.

21027150824 is a deficient number, since it is larger than the sum of its proper divisors (19452765016).

21027150824 is a wasteful number, since it uses less digits than its factorization.

21027150824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570 (or 1566 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The spelling of 21027150824 in words is "twenty-one billion, twenty-seven million, one hundred fifty thousand, eight hundred twenty-four".