1143551777611 has 4 divisors (see below), whose sum is σ = 1171443284424. Its totient is φ = 1115660270800.

The previous prime is 1143551777587. The next prime is 1143551777617. The reversal of 1143551777611 is 1167771553411.

It is a happy number.

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 1143551777611 - 2¹⁵ = 1143551744843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143551777617) 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, 13945753345 + ... + 13945753426.

It is an arithmetic number, because the mean of its divisors is an integer number (292860821106).

Almost surely, 2^{1143551777611} is an apocalyptic number.

1143551777611 is a deficient number, since it is larger than the sum of its proper divisors (27891506813).

1143551777611 is an equidigital number, since it uses as much as digits as its factorization.

1143551777611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27891506812.

The product of its digits is 617400, while the sum is 49.

The spelling of 1143551777611 in words is "one trillion, one hundred forty-three billion, five hundred fifty-one million, seven hundred seventy-seven thousand, six hundred eleven".