1205747513011 has 4 divisors (see below), whose sum is σ = 1205751001000. Its totient is φ = 1205744025024.

The previous prime is 1205747512973. The next prime is 1205747513027. The reversal of 1205747513011 is 1103157475021.

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 1205747513011 - 2⁷ = 1205747512883 is a prime.

It is a super-2 number, since 2×1205747513011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205747913011) 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, 1160361 + ... + 1938538.

It is an arithmetic number, because the mean of its divisors is an integer number (301437750250).

Almost surely, 2^{1205747513011} is an apocalyptic number.

1205747513011 is a deficient number, since it is larger than the sum of its proper divisors (3487989).

1205747513011 is an equidigital number, since it uses as much as digits as its factorization.

1205747513011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487988.

The product of its (nonzero) digits is 29400, while the sum is 37.

The spelling of 1205747513011 in words is "one trillion, two hundred five billion, seven hundred forty-seven million, five hundred thirteen thousand, eleven".