21203267528744 has 32 divisors (see below), whose sum is σ = 45517145287680. Its totient is φ = 9070800252864.

The previous prime is 21203267528699. The next prime is 21203267528791. The reversal of 21203267528744 is 44782576230212.

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, 339851912 + ... + 339914295.

It is an arithmetic number, because the mean of its divisors is an integer number (1422410790240).

Almost surely, 2^{21203267528744} is an apocalyptic number.

It is an amenable number.

21203267528744 is an abundant number, since it is smaller than the sum of its proper divisors (24313877758936).

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

21203267528744 is a wasteful number, since it uses less digits than its factorization.

21203267528744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679766777 (or 679766773 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 53.

The spelling of 21203267528744 in words is "twenty-one trillion, two hundred three billion, two hundred sixty-seven million, five hundred twenty-eight thousand, seven hundred forty-four".