21315326060 has 48 divisors (see below), whose sum is σ = 51877324800. Its totient is φ = 7205177280.

The previous prime is 21315326059. The next prime is 21315326069. The reversal of 21315326060 is 6062351312.

It is not an unprimeable number, because it can be changed into a prime (21315326069) 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, 1062260 + ... + 1082139.

It is an arithmetic number, because the mean of its divisors is an integer number (1080777600).

Almost surely, 2^21315326060 is an apocalyptic number.

21315326060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21315326060 is an abundant number, since it is smaller than the sum of its proper divisors (30561998740).

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

21315326060 is a wasteful number, since it uses less digits than its factorization.

21315326060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144486 (or 2144484 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 21315326060 its reverse (6062351312), we get a palindrome (27377677372).

The spelling of 21315326060 in words is "twenty-one billion, three hundred fifteen million, three hundred twenty-six thousand, sixty".