12512273040 has 160 divisors (see below), whose sum is σ = 43480074240. Its totient is φ = 3307014144.

The previous prime is 12512273023. The next prime is 12512273047. The reversal of 12512273040 is 4037221521.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12512272995 and 12512273013.

It is not an unprimeable number, because it can be changed into a prime (12512273047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218449 + ... + 269711.

It is an arithmetic number, because the mean of its divisors is an integer number (271750464).

Almost surely, 2^12512273040 is an apocalyptic number.

12512273040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12512273040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21740037120).

12512273040 is an abundant number, since it is smaller than the sum of its proper divisors (30967801200).

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

12512273040 is a wasteful number, since it uses less digits than its factorization.

12512273040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51398 (or 51386 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

Adding to 12512273040 its reverse (4037221521), we get a palindrome (16549494561).

The spelling of 12512273040 in words is "twelve billion, five hundred twelve million, two hundred seventy-three thousand, forty".