21041073460 has 48 divisors (see below), whose sum is σ = 48680497152. Its totient is φ = 7575536000.

The previous prime is 21041073373. The next prime is 21041073467. The reversal of 21041073460 is 6437014012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041073467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451252 + ... + 495691.

It is an arithmetic number, because the mean of its divisors is an integer number (1014177024).

Almost surely, 2^21041073460 is an apocalyptic number.

21041073460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21041073460 is an abundant number, since it is smaller than the sum of its proper divisors (27639423692).

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

21041073460 is a wasteful number, since it uses less digits than its factorization.

21041073460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947064 (or 947062 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 21041073460 its reverse (6437014012), we get a palindrome (27478087472).

The spelling of 21041073460 in words is "twenty-one billion, forty-one million, seventy-three thousand, four hundred sixty".