21345454153 has 8 divisors (see below), whose sum is σ = 22331312640. Its totient is φ = 20381749920.

The previous prime is 21345454111. The next prime is 21345454171. The reversal of 21345454153 is 35145454312.

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 21345454153 - 2¹⁷ = 21345323081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21345457153) 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, 5536593 + ... + 5540446.

It is an arithmetic number, because the mean of its divisors is an integer number (2791414080).

Almost surely, 2^21345454153 is an apocalyptic number.

It is an amenable number.

21345454153 is a deficient number, since it is larger than the sum of its proper divisors (985858487).

21345454153 is a wasteful number, since it uses less digits than its factorization.

21345454153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11077127.

The product of its digits is 144000, while the sum is 37.

The spelling of 21345454153 in words is "twenty-one billion, three hundred forty-five million, four hundred fifty-four thousand, one hundred fifty-three".