1272581678111 has 4 divisors (see below), whose sum is σ = 1272642591000. Its totient is φ = 1272520765224.

The previous prime is 1272581678089. The next prime is 1272581678143. The reversal of 1272581678111 is 1118761852721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1272581678111 - 2⁶ = 1272581678047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1272581678111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272581678411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30425096 + ... + 30466893.

It is an arithmetic number, because the mean of its divisors is an integer number (318160647750).

Almost surely, 2^{1272581678111} is an apocalyptic number.

1272581678111 is a deficient number, since it is larger than the sum of its proper divisors (60912889).

1272581678111 is an equidigital number, since it uses as much as digits as its factorization.

1272581678111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60912888.

The product of its digits is 376320, while the sum is 50.

The spelling of 1272581678111 in words is "one trillion, two hundred seventy-two billion, five hundred eighty-one million, six hundred seventy-eight thousand, one hundred eleven".