1165950130551 has 48 divisors (see below), whose sum is σ = 1657030435200. Its totient is φ = 728931018816.

The previous prime is 1165950130547. The next prime is 1165950130559. The reversal of 1165950130551 is 1550310595611.

It is a happy number.

It is not a de Polignac number, because 1165950130551 - 2² = 1165950130547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165950130559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 132806880 + ... + 132815658.

It is an arithmetic number, because the mean of its divisors is an integer number (34521467400).

Almost surely, 2^{1165950130551} is an apocalyptic number.

1165950130551 is a deficient number, since it is larger than the sum of its proper divisors (491080304649).

1165950130551 is a wasteful number, since it uses less digits than its factorization.

1165950130551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10460 (or 10437 counting only the distinct ones).

The product of its (nonzero) digits is 101250, while the sum is 42.

The spelling of 1165950130551 in words is "one trillion, one hundred sixty-five billion, nine hundred fifty million, one hundred thirty thousand, five hundred fifty-one".