21245031553153 has 8 divisors (see below), whose sum is σ = 21254167378080. Its totient is φ = 21235896723360.

The previous prime is 21245031553117. The next prime is 21245031553181. The reversal of 21245031553153 is 35135513054212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21245031553153 - 2²⁹ = 21244494682241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21245031553103) 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, 44153358 + ... + 44631928.

It is an arithmetic number, because the mean of its divisors is an integer number (2656770922260).

Almost surely, 2^{21245031553153} is an apocalyptic number.

It is an amenable number.

21245031553153 is a deficient number, since it is larger than the sum of its proper divisors (9135824927).

21245031553153 is a wasteful number, since it uses less digits than its factorization.

21245031553153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497567.

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 21245031553153 in words is "twenty-one trillion, two hundred forty-five billion, thirty-one million, five hundred fifty-three thousand, one hundred fifty-three".