11456542012 has 24 divisors (see below), whose sum is σ = 21346914960. Its totient is φ = 5361189120.

The previous prime is 11456541991. The next prime is 11456542021. The reversal of 11456542012 is 21024565411.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458439 + ... + 482782.

It is an arithmetic number, because the mean of its divisors is an integer number (889454790).

Almost surely, 2^11456542012 is an apocalyptic number.

It is an amenable number.

11456542012 is a deficient number, since it is larger than the sum of its proper divisors (9890372948).

11456542012 is a wasteful number, since it uses less digits than its factorization.

11456542012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941421 (or 941419 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 11456542012 in words is "eleven billion, four hundred fifty-six million, five hundred forty-two thousand, twelve".