21363373398 has 8 divisors (see below), whose sum is σ = 42726746808. Its totient is φ = 7121124464.

The previous prime is 21363373397. The next prime is 21363373399. The reversal of 21363373398 is 89337336312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21363373397) and next prime (21363373399).

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

21363373398 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21363373397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1780281111 + ... + 1780281122.

It is an arithmetic number, because the mean of its divisors is an integer number (5340843351).

Almost surely, 2^21363373398 is an apocalyptic number.

21363373398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21363373398 is a wasteful number, since it uses less digits than its factorization.

21363373398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560562238.

The product of its digits is 1469664, while the sum is 48.

The spelling of 21363373398 in words is "twenty-one billion, three hundred sixty-three million, three hundred seventy-three thousand, three hundred ninety-eight".