1155867823639 has 2 divisors, whose sum is σ = 1155867823640. Its totient is φ = 1155867823638.

The previous prime is 1155867823541. The next prime is 1155867823651. The reversal of 1155867823639 is 9363287685511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1155867823639 - 2²⁵ = 1155834269207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155867833639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577933911819 + 577933911820.

It is an arithmetic number, because the mean of its divisors is an integer number (577933911820).

Almost surely, 2^{1155867823639} is an apocalyptic number.

1155867823639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155867823639 is an equidigital number, since it uses as much as digits as its factorization.

1155867823639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65318400, while the sum is 64.

The spelling of 1155867823639 in words is "one trillion, one hundred fifty-five billion, eight hundred sixty-seven million, eight hundred twenty-three thousand, six hundred thirty-nine".