15455222512 has 80 divisors (see below), whose sum is σ = 32423639040. Its totient is φ = 7110245376.

The previous prime is 15455222509. The next prime is 15455222557. The reversal of 15455222512 is 21522255451.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2209773 + ... + 2216755.

It is an arithmetic number, because the mean of its divisors is an integer number (405295488).

Almost surely, 2^15455222512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15455222512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16211819520).

15455222512 is an abundant number, since it is smaller than the sum of its proper divisors (16968416528).

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

15455222512 is a wasteful number, since it uses less digits than its factorization.

15455222512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190 (or 7184 counting only the distinct ones).

The product of its digits is 40000, while the sum is 34.

Adding to 15455222512 its reverse (21522255451), we get a palindrome (36977477963).

The spelling of 15455222512 in words is "fifteen billion, four hundred fifty-five million, two hundred twenty-two thousand, five hundred twelve".