21827580963 has 8 divisors (see below), whose sum is σ = 29391594576. Its totient is φ = 14407644000.

The previous prime is 21827580919. The next prime is 21827580989. The reversal of 21827580963 is 36908572812.

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

It is not a de Polignac number, because 21827580963 - 2⁸ = 21827580707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21827580563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36018808 + ... + 36019413.

It is an arithmetic number, because the mean of its divisors is an integer number (3673949322).

Almost surely, 2^21827580963 is an apocalyptic number.

21827580963 is a deficient number, since it is larger than the sum of its proper divisors (7564013613).

21827580963 is a wasteful number, since it uses less digits than its factorization.

21827580963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72038325.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 21827580963 in words is "twenty-one billion, eight hundred twenty-seven million, five hundred eighty thousand, nine hundred sixty-three".