15212214453 has 8 divisors (see below), whose sum is σ = 20285166400. Its totient is φ = 10140369408.

The previous prime is 15212214403. The next prime is 15212214481. The reversal of 15212214453 is 35441221251.

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

It is not a de Polignac number, because 15212214453 - 2¹⁴ = 15212198069 is a prime.

It is a super-2 number, since 2×15212214453² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15212214453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15212214403) 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, 244108 + ... + 300021.

It is an arithmetic number, because the mean of its divisors is an integer number (2535645800).

Almost surely, 2^15212214453 is an apocalyptic number.

It is an amenable number.

15212214453 is a deficient number, since it is larger than the sum of its proper divisors (5072951947).

15212214453 is an equidigital number, since it uses as much as digits as its factorization.

15212214453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553451.

The product of its digits is 9600, while the sum is 30.

The spelling of 15212214453 in words is "fifteen billion, two hundred twelve million, two hundred fourteen thousand, four hundred fifty-three".