21627355484 has 48 divisors (see below), whose sum is σ = 43919893248. Its totient is φ = 9127064448.

The previous prime is 21627355481. The next prime is 21627355489. The reversal of 21627355484 is 48455372612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21627355481) 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, 698312 + ... + 728624.

It is an arithmetic number, because the mean of its divisors is an integer number (914997776).

Almost surely, 2^21627355484 is an apocalyptic number.

It is an amenable number.

21627355484 is an abundant number, since it is smaller than the sum of its proper divisors (22292537764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21627355484 is a wasteful number, since it uses less digits than its factorization.

21627355484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30714 (or 30712 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 47.

The spelling of 21627355484 in words is "twenty-one billion, six hundred twenty-seven million, three hundred fifty-five thousand, four hundred eighty-four".