12356762021055 has 48 divisors (see below), whose sum is σ = 22863215831040. Its totient is φ = 6155481124800.

The previous prime is 12356762021039. The next prime is 12356762021069. The reversal of 12356762021055 is 55012026765321.

It is a happy number.

12356762021055 is a `hidden beast` number, since 1 + 2 + 3 + 5 + 6 + 7 + 620 + 2 + 10 + 5 + 5 = 666.

It is not a de Polignac number, because 12356762021055 - 2⁴ = 12356762021039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12356762021055.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 101716431 + ... + 101837840.

It is an arithmetic number, because the mean of its divisors is an integer number (476316996480).

Almost surely, 2^{12356762021055} is an apocalyptic number.

12356762021055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12356762021055 is a deficient number, since it is larger than the sum of its proper divisors (10506453809985).

12356762021055 is a wasteful number, since it uses less digits than its factorization.

12356762021055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203554372 (or 203554369 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

Adding to 12356762021055 its reverse (55012026765321), we get a palindrome (67368788786376).

The spelling of 12356762021055 in words is "twelve trillion, three hundred fifty-six billion, seven hundred sixty-two million, twenty-one thousand, fifty-five".