1278706374720 has 224 divisors, whose sum is σ = 4511757133440. Its totient is φ = 340930529280.

The previous prime is 1278706374707. The next prime is 1278706374739. The reversal of 1278706374720 is 274736078721.

1278706374720 is a `hidden beast` number, since 1 + 2 + 78 + 70 + 6 + 37 + 472 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81735219 + ... + 81750861.

Almost surely, 2^{1278706374720} is an apocalyptic number.

1278706374720 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 1278706374720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2255878566720).

1278706374720 is an abundant number, since it is smaller than the sum of its proper divisors (3233050758720).

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

1278706374720 is a wasteful number, since it uses less digits than its factorization.

1278706374720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25130 (or 25114 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 54.

The spelling of 1278706374720 in words is "one trillion, two hundred seventy-eight billion, seven hundred six million, three hundred seventy-four thousand, seven hundred twenty".