9421538693504 has 32 divisors (see below), whose sum is σ = 21450824706000. Its totient is φ = 4037802296832.

The previous prime is 9421538693503. The next prime is 9421538693509. The reversal of 9421538693504 is 4053968351249.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9421538693503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5257554179 + ... + 5257555970.

Almost surely, 2^{9421538693504} is an apocalyptic number.

It is an amenable number.

9421538693504 is an abundant number, since it is smaller than the sum of its proper divisors (12029286012496).

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

9421538693504 is a wasteful number, since it uses less digits than its factorization.

9421538693504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10515110170 (or 10515110158 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 59.

The spelling of 9421538693504 in words is "nine trillion, four hundred twenty-one billion, five hundred thirty-eight million, six hundred ninety-three thousand, five hundred four".