1158767691831 has 6 divisors (see below), whose sum is σ = 1673775554880. Its totient is φ = 772511794548.

The previous prime is 1158767691803. The next prime is 1158767691833. The reversal of 1158767691831 is 1381967678511.

1158767691831 is a `hidden beast` number, since 1 + 1 + 587 + 6 + 7 + 6 + 9 + 18 + 31 = 666.

It is not a de Polignac number, because 1158767691831 - 2¹⁰ = 1158767690807 is a prime.

It is a super-2 number, since 2×1158767691831² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158767691833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64375982871 + ... + 64375982888.

It is an arithmetic number, because the mean of its divisors is an integer number (278962592480).

Almost surely, 2^{1158767691831} is an apocalyptic number.

1158767691831 is a deficient number, since it is larger than the sum of its proper divisors (515007863049).

1158767691831 is a wasteful number, since it uses less digits than its factorization.

1158767691831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128751965765 (or 128751965762 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 63.

The spelling of 1158767691831 in words is "one trillion, one hundred fifty-eight billion, seven hundred sixty-seven million, six hundred ninety-one thousand, eight hundred thirty-one".