21034269760 has 56 divisors (see below), whose sum is σ = 57243268800. Its totient is φ = 7211748864.

The previous prime is 21034269757. The next prime is 21034269889. The reversal of 21034269760 is 6796243012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 4692910 + ... + 4697389.

Almost surely, 2^21034269760 is an apocalyptic number.

21034269760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21034269760 is an abundant number, since it is smaller than the sum of its proper divisors (36208999040).

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

21034269760 is an equidigital number, since it uses as much as digits as its factorization.

21034269760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9390323 (or 9390313 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 21034269760 in words is "twenty-one billion, thirty-four million, two hundred sixty-nine thousand, seven hundred sixty".