21026073360 has 160 divisors (see below), whose sum is σ = 68758456320. Its totient is φ = 5300467200.

The previous prime is 21026073349. The next prime is 21026073373. The reversal of 21026073360 is 6337062012.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2234265 + ... + 2243655.

It is an arithmetic number, because the mean of its divisors is an integer number (429740352).

Almost surely, 2^21026073360 is an apocalyptic number.

21026073360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21026073360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34379228160).

21026073360 is an abundant number, since it is smaller than the sum of its proper divisors (47732382960).

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

21026073360 is a wasteful number, since it uses less digits than its factorization.

21026073360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9917 (or 9911 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The spelling of 21026073360 in words is "twenty-one billion, twenty-six million, seventy-three thousand, three hundred sixty".