21152520046304 has 48 divisors (see below), whose sum is σ = 43247651706000. Its totient is φ = 10171827585024.

The previous prime is 21152520046303. The next prime is 21152520046313. The reversal of 21152520046304 is 40364002525112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21152520046303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44107154 + ... + 44584145.

It is an arithmetic number, because the mean of its divisors is an integer number (900992743875).

Almost surely, 2^{21152520046304} is an apocalyptic number.

It is an amenable number.

21152520046304 is an abundant number, since it is smaller than the sum of its proper divisors (22095131659696).

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

21152520046304 is a wasteful number, since it uses less digits than its factorization.

21152520046304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88691595 (or 88691587 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 21152520046304 in words is "twenty-one trillion, one hundred fifty-two billion, five hundred twenty million, forty-six thousand, three hundred four".