12766626740 has 192 divisors, whose sum is σ = 32167231488. Its totient is φ = 4165862400.

The previous prime is 12766626727. The next prime is 12766626839. The reversal of 12766626740 is 4762666721.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60505235 + ... + 60505445.

It is an arithmetic number, because the mean of its divisors is an integer number (167537664).

Almost surely, 2^12766626740 is an apocalyptic number.

12766626740 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 12766626740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16083615744).

12766626740 is an abundant number, since it is smaller than the sum of its proper divisors (19400604748).

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

12766626740 is a wasteful number, since it uses less digits than its factorization.

12766626740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 12766626740 in words is "twelve billion, seven hundred sixty-six million, six hundred twenty-six thousand, seven hundred forty".