11675621947 has 16 divisors (see below), whose sum is σ = 13815222624. Its totient is φ = 9746176000.

The previous prime is 11675621939. The next prime is 11675622047. The reversal of 11675621947 is 74912657611.

It is not a de Polignac number, because 11675621947 - 2³ = 11675621939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11675621947.

It is not an unprimeable number, because it can be changed into a prime (11675621747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753754 + ... + 769087.

It is an arithmetic number, because the mean of its divisors is an integer number (863451414).

Almost surely, 2^11675621947 is an apocalyptic number.

11675621947 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11675621947 is a deficient number, since it is larger than the sum of its proper divisors (2139600677).

11675621947 is a wasteful number, since it uses less digits than its factorization.

11675621947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522910.

The product of its digits is 635040, while the sum is 49.

The spelling of 11675621947 in words is "eleven billion, six hundred seventy-five million, six hundred twenty-one thousand, nine hundred forty-seven".