11476715821 has 4 divisors (see below), whose sum is σ = 11720901312. Its totient is φ = 11232530332.

The previous prime is 11476715819. The next prime is 11476715837. The reversal of 11476715821 is 12851767411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11476715821 - 2¹ = 11476715819 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 (11476715801) 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, 122092675 + ... + 122092768.

It is an arithmetic number, because the mean of its divisors is an integer number (2930225328).

Almost surely, 2^11476715821 is an apocalyptic number.

It is an amenable number.

11476715821 is a deficient number, since it is larger than the sum of its proper divisors (244185491).

11476715821 is an equidigital number, since it uses as much as digits as its factorization.

11476715821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244185490.

The product of its digits is 94080, while the sum is 43.

The spelling of 11476715821 in words is "eleven billion, four hundred seventy-six million, seven hundred fifteen thousand, eight hundred twenty-one".