1205747511967 has 2 divisors, whose sum is σ = 1205747511968. Its totient is φ = 1205747511966.

The previous prime is 1205747511949. The next prime is 1205747511989. The reversal of 1205747511967 is 7691157475021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1205747511967 - 2²⁷ = 1205613294239 is a prime.

It is a super-2 number, since 2×1205747511967² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205745511967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602873755983 + 602873755984.

It is an arithmetic number, because the mean of its divisors is an integer number (602873755984).

Almost surely, 2^{1205747511967} is an apocalyptic number.

1205747511967 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205747511967 is an equidigital number, since it uses as much as digits as its factorization.

1205747511967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3704400, while the sum is 55.

The spelling of 1205747511967 in words is "one trillion, two hundred five billion, seven hundred forty-seven million, five hundred eleven thousand, nine hundred sixty-seven".