15454402212 has 12 divisors (see below), whose sum is σ = 36060271856. Its totient is φ = 5151467400.

The previous prime is 15454402181. The next prime is 15454402217. The reversal of 15454402212 is 21220445451.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 15454402212.

It is not an unprimeable number, because it can be changed into a prime (15454402217) 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, 643933414 + ... + 643933437.

Almost surely, 2^15454402212 is an apocalyptic number.

15454402212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15454402212 is an abundant number, since it is smaller than the sum of its proper divisors (20605869644).

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

15454402212 is a wasteful number, since it uses less digits than its factorization.

15454402212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287866858 (or 1287866856 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 15454402212 its reverse (21220445451), we get a palindrome (36674847663).

The spelling of 15454402212 in words is "fifteen billion, four hundred fifty-four million, four hundred two thousand, two hundred twelve".