21294328486 has 32 divisors (see below), whose sum is σ = 34142977440. Its totient is φ = 9925741056.

The previous prime is 21294328453. The next prime is 21294328519. The reversal of 21294328486 is 68482349212.

It is an interprime number because it is at equal distance from previous prime (21294328453) and next prime (21294328519).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1526901 + ... + 1540783.

It is an arithmetic number, because the mean of its divisors is an integer number (1066968045).

Almost surely, 2^21294328486 is an apocalyptic number.

21294328486 is a deficient number, since it is larger than the sum of its proper divisors (12848648954).

21294328486 is a wasteful number, since it uses less digits than its factorization.

21294328486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14328.

The product of its digits is 1327104, while the sum is 49.

The spelling of 21294328486 in words is "twenty-one billion, two hundred ninety-four million, three hundred twenty-eight thousand, four hundred eighty-six".