11315926973 has 4 divisors (see below), whose sum is σ = 12186382908. Its totient is φ = 10445471040.

The previous prime is 11315926907. The next prime is 11315927017. The reversal of 11315926973 is 37962951311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2054174329 + 9261752644 = 45323^2 + 96238^2 .

It is a cyclic number.

It is not a de Polignac number, because 11315926973 - 2²⁰ = 11314878397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11315923973) 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, 435227948 + ... + 435227973.

It is an arithmetic number, because the mean of its divisors is an integer number (3046595727).

Almost surely, 2^11315926973 is an apocalyptic number.

11315926973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11315926973 is a deficient number, since it is larger than the sum of its proper divisors (870455935).

11315926973 is an equidigital number, since it uses as much as digits as its factorization.

11315926973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870455934.

The product of its digits is 306180, while the sum is 47.

The spelling of 11315926973 in words is "eleven billion, three hundred fifteen million, nine hundred twenty-six thousand, nine hundred seventy-three".