11477250521 has 4 divisors (see below), whose sum is σ = 12520636944. Its totient is φ = 10433864100.

The previous prime is 11477250481. The next prime is 11477250527. The reversal of 11477250521 is 12505277411.

11477250521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12505277411 = 11 ⋅1136843401.

It is not a de Polignac number, because 11477250521 - 2¹⁸ = 11476988377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11477250527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521693195 + ... + 521693216.

It is an arithmetic number, because the mean of its divisors is an integer number (3130159236).

Almost surely, 2^11477250521 is an apocalyptic number.

11477250521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11477250521 is a deficient number, since it is larger than the sum of its proper divisors (1043386423).

11477250521 is a wasteful number, since it uses less digits than its factorization.

11477250521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043386422.

The product of its (nonzero) digits is 19600, while the sum is 35.

The spelling of 11477250521 in words is "eleven billion, four hundred seventy-seven million, two hundred fifty thousand, five hundred twenty-one".