21302445245394 has 16 divisors (see below), whose sum is σ = 42621790517280. Its totient is φ = 7097998410720.

The previous prime is 21302445245381. The next prime is 21302445245407. The reversal of 21302445245394 is 49354254420312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21302445245381) and next prime (21302445245407).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704151384 + ... + 704181635.

It is an arithmetic number, because the mean of its divisors is an integer number (2663861907330).

Almost surely, 2^{21302445245394} is an apocalyptic number.

21302445245394 is an abundant number, since it is smaller than the sum of its proper divisors (21319345271886).

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

21302445245394 is a wasteful number, since it uses less digits than its factorization.

21302445245394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408335545.

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 21302445245394 in words is "twenty-one trillion, three hundred two billion, four hundred forty-five million, two hundred forty-five thousand, three hundred ninety-four".