12746007771840 has 1344 divisors, whose sum is σ = 53496645156864. Its totient is φ = 2828213563392.

The previous prime is 12746007771803. The next prime is 12746007771853. The reversal of 12746007771840 is 4817770064721.

12746007771840 is a `hidden beast` number, since 1 + 2 + 7 + 460 + 0 + 77 + 71 + 8 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3249044119 + ... + 3249048041.

It is an arithmetic number, because the mean of its divisors is an integer number (39804051456).

Almost surely, 2^{12746007771840} is an apocalyptic number.

12746007771840 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 12746007771840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26748322578432).

12746007771840 is an abundant number, since it is smaller than the sum of its proper divisors (40750637385024).

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

12746007771840 is a wasteful number, since it uses less digits than its factorization.

12746007771840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136 (or 4114 counting only the distinct ones).

The product of its (nonzero) digits is 3687936, while the sum is 54.

The spelling of 12746007771840 in words is "twelve trillion, seven hundred forty-six billion, seven million, seven hundred seventy-one thousand, eight hundred forty".