1168047121631 has 4 divisors (see below), whose sum is σ = 1257896900232. Its totient is φ = 1078197343032.

The previous prime is 1168047121613. The next prime is 1168047121673. The reversal of 1168047121631 is 1361217408611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1168047121631 is a prime.

It is a super-2 number, since 2×1168047121631² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1168047121691) 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, 44924889281 + ... + 44924889306.

It is an arithmetic number, because the mean of its divisors is an integer number (314474225058).

Almost surely, 2^{1168047121631} is an apocalyptic number.

1168047121631 is a deficient number, since it is larger than the sum of its proper divisors (89849778601).

1168047121631 is an equidigital number, since it uses as much as digits as its factorization.

1168047121631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89849778600.

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 1168047121631 in words is "one trillion, one hundred sixty-eight billion, forty-seven million, one hundred twenty-one thousand, six hundred thirty-one".