21420007533348 has 24 divisors (see below), whose sum is σ = 50156625421728. Its totient is φ = 7114772819136.

The previous prime is 21420007533347. The next prime is 21420007533359. The reversal of 21420007533348 is 84333570002412.

It is not an unprimeable number, because it can be changed into a prime (21420007533347) 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, 3153707961 + ... + 3153714752.

It is an arithmetic number, because the mean of its divisors is an integer number (2089859392572).

Almost surely, 2^{21420007533348} is an apocalyptic number.

It is an amenable number.

21420007533348 is an abundant number, since it is smaller than the sum of its proper divisors (28736617888380).

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

21420007533348 is a wasteful number, since it uses less digits than its factorization.

21420007533348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6307423003 (or 6307423001 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 21420007533348 in words is "twenty-one trillion, four hundred twenty billion, seven million, five hundred thirty-three thousand, three hundred forty-eight".