12720536054 has 16 divisors (see below), whose sum is σ = 19410632640. Its totient is φ = 6250396680.

The previous prime is 12720536039. The next prime is 12720536069. The reversal of 12720536054 is 45063502721.

It is an interprime number because it is at equal distance from previous prime (12720536039) and next prime (12720536069).

It is a super-2 number, since 2×12720536054² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 376877 + ... + 409239.

It is an arithmetic number, because the mean of its divisors is an integer number (1213164540).

Almost surely, 2^12720536054 is an apocalyptic number.

12720536054 is a deficient number, since it is larger than the sum of its proper divisors (6690096586).

12720536054 is a wasteful number, since it uses less digits than its factorization.

12720536054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35755.

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 12720536054 in words is "twelve billion, seven hundred twenty million, five hundred thirty-six thousand, fifty-four".