21034775000 has 48 divisors (see below), whose sum is σ = 49297157280. Its totient is φ = 8413900000.

The previous prime is 21034774973. The next prime is 21034775009. The reversal of 21034775000 is 57743012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034775009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395696 + ... + 445695.

It is an arithmetic number, because the mean of its divisors is an integer number (1027024110).

Almost surely, 2^21034775000 is an apocalyptic number.

21034775000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21034775000 is an abundant number, since it is smaller than the sum of its proper divisors (28262382280).

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

21034775000 is an frugal number, since it uses more digits than its factorization.

21034775000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841422 (or 841398 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The spelling of 21034775000 in words is "twenty-one billion, thirty-four million, seven hundred seventy-five thousand".