21873899511030 has 96 divisors (see below), whose sum is σ = 61084583053056. Its totient is φ = 4998419944896.

The previous prime is 21873899511017. The next prime is 21873899511041. The reversal of 21873899511030 is 3011599837812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3562417 + ... + 7512563.

It is an arithmetic number, because the mean of its divisors is an integer number (636297740136).

Almost surely, 2^{21873899511030} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21873899511030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30542291526528).

21873899511030 is an abundant number, since it is smaller than the sum of its proper divisors (39210683542026).

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

21873899511030 is a wasteful number, since it uses less digits than its factorization.

21873899511030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953938 (or 3953931 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 57.

The spelling of 21873899511030 in words is "twenty-one trillion, eight hundred seventy-three billion, eight hundred ninety-nine million, five hundred eleven thousand, thirty".