11995847477 has 16 divisors (see below), whose sum is σ = 12471030000. Its totient is φ = 11524929024.

The previous prime is 11995847473. The next prime is 11995847533. The reversal of 11995847477 is 77474859911.

It can be written as a sum of positive squares in 8 ways, for example, as 2531281 + 11993316196 = 1591^2 + 109514^2 .

It is a cyclic number.

It is not a de Polignac number, because 11995847477 - 2² = 11995847473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11995847473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6153899 + ... + 6155847.

It is an arithmetic number, because the mean of its divisors is an integer number (779439375).

Almost surely, 2^11995847477 is an apocalyptic number.

It is an amenable number.

11995847477 is a deficient number, since it is larger than the sum of its proper divisors (475182523).

11995847477 is a wasteful number, since it uses less digits than its factorization.

11995847477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920.

The product of its digits is 17781120, while the sum is 62.

The spelling of 11995847477 in words is "eleven billion, nine hundred ninety-five million, eight hundred forty-seven thousand, four hundred seventy-seven".