12451968240 has 80 divisors (see below), whose sum is σ = 40871767968. Its totient is φ = 3125198848.

The previous prime is 12451968233. The next prime is 12451968253. The reversal of 12451968240 is 4286915421.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 12451968192 and 12451968201.

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, 1521897 + ... + 1530056.

Almost surely, 2^12451968240 is an apocalyptic number.

12451968240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12451968240 is an abundant number, since it is smaller than the sum of its proper divisors (28419799728).

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

12451968240 is a wasteful number, since it uses less digits than its factorization.

12451968240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051986 (or 3051980 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 12451968240 in words is "twelve billion, four hundred fifty-one million, nine hundred sixty-eight thousand, two hundred forty".