12770415845478 has 96 divisors (see below), whose sum is σ = 29547425980800. Its totient is φ = 3974742551808.

The previous prime is 12770415845461. The next prime is 12770415845519. The reversal of 12770415845478 is 87454851407721.

It is a happy number.

12770415845478 is a `hidden beast` number, since 1 + 2 + 7 + 7 + 0 + 4 + 1 + 5 + 84 + 547 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5994601 + ... + 7840667.

It is an arithmetic number, because the mean of its divisors is an integer number (307785687300).

Almost surely, 2^{12770415845478} is an apocalyptic number.

12770415845478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12770415845478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14773712990400).

12770415845478 is an abundant number, since it is smaller than the sum of its proper divisors (16777010135322).

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

12770415845478 is a wasteful number, since it uses less digits than its factorization.

12770415845478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846386 (or 1846383 counting only the distinct ones).

The product of its (nonzero) digits is 70246400, while the sum is 63.

The spelling of 12770415845478 in words is "twelve trillion, seven hundred seventy billion, four hundred fifteen million, eight hundred forty-five thousand, four hundred seventy-eight".