11772738729 has 24 divisors (see below), whose sum is σ = 17530865352. Its totient is φ = 7608257280.

The previous prime is 11772738727. The next prime is 11772738763. The reversal of 11772738729 is 92783727711.

It can be written as a sum of positive squares in 4 ways, for example, as 54243225 + 11718495504 = 7365^2 + 108252^2 .

It is not a de Polignac number, because 11772738729 - 2¹ = 11772738727 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11772738721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43674 + ... + 159539.

It is an arithmetic number, because the mean of its divisors is an integer number (730452723).

Almost surely, 2^11772738729 is an apocalyptic number.

It is an amenable number.

11772738729 is a deficient number, since it is larger than the sum of its proper divisors (5758126623).

11772738729 is a wasteful number, since it uses less digits than its factorization.

11772738729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203417 (or 203414 counting only the distinct ones).

The product of its digits is 2074464, while the sum is 54.

The spelling of 11772738729 in words is "eleven billion, seven hundred seventy-two million, seven hundred thirty-eight thousand, seven hundred twenty-nine".