1164266806550 has 24 divisors (see below), whose sum is σ = 2165581353000. Its totient is φ = 465697025280.

The previous prime is 1164266806537. The next prime is 1164266806567. The reversal of 1164266806550 is 556086624611.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2487041 + ... + 2917859.

It is an arithmetic number, because the mean of its divisors is an integer number (90232556375).

Almost surely, 2^{1164266806550} is an apocalyptic number.

1164266806550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1164266806550 is a deficient number, since it is larger than the sum of its proper divisors (1001314546450).

1164266806550 is a wasteful number, since it uses less digits than its factorization.

1164266806550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484880 (or 484875 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 1164266806550 in words is "one trillion, one hundred sixty-four billion, two hundred sixty-six million, eight hundred six thousand, five hundred fifty".