1135347787729 has 3 divisors (see below), whose sum is σ = 1135348853257. Its totient is φ = 1135346722202.

The previous prime is 1135347787727. The next prime is 1135347787753. The reversal of 1135347787729 is 9277877435311.

The square root of 1135347787729 is 1065527.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1135347787729 - 2¹ = 1135347787727 is a prime.

It is a super-2 number, since 2×1135347787729² (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 (1135347787727) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 532764 + ... + 1598290.

Almost surely, 2^{1135347787729} is an apocalyptic number.

1135347787729 is the 1065527-th square number.

1135347787729 is the 532764-th centered octagonal number.

It is an amenable number.

1135347787729 is a deficient number, since it is larger than the sum of its proper divisors (1065528).

1135347787729 is an frugal number, since it uses more digits than its factorization.

1135347787729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131054 (or 1065527 counting only the distinct ones).

The product of its digits is 62233920, while the sum is 64.

Multiplying 1135347787729 by its sum of digits (64), we get a square (72662258414656 = 8524216²).

The spelling of 1135347787729 in words is "one trillion, one hundred thirty-five billion, three hundred forty-seven million, seven hundred eighty-seven thousand, seven hundred twenty-nine".