12893778480 has 160 divisors (see below), whose sum is σ = 45899562240. Its totient is φ = 2961239040.

The previous prime is 12893778439. The next prime is 12893778481. The reversal of 12893778480 is 8487739821.

It is a super-2 number, since 2×12893778480² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 12893778480.

It is not an unprimeable number, because it can be changed into a prime (12893778481) 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, 78367 + ... + 178686.

It is an arithmetic number, because the mean of its divisors is an integer number (286872264).

Almost surely, 2^12893778480 is an apocalyptic number.

12893778480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12893778480 is an abundant number, since it is smaller than the sum of its proper divisors (33005783760).

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

12893778480 is a wasteful number, since it uses less digits than its factorization.

12893778480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257099 (or 257093 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 57.

The spelling of 12893778480 in words is "twelve billion, eight hundred ninety-three million, seven hundred seventy-eight thousand, four hundred eighty".