11550456021 has 16 divisors (see below), whose sum is σ = 16627927680. Its totient is φ = 7089691200.

The previous prime is 11550456007. The next prime is 11550456031. The reversal of 11550456021 is 12065405511.

It is not a de Polignac number, because 11550456021 - 2¹³ = 11550447829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11550456021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11550456031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365505 + ... + 395846.

It is an arithmetic number, because the mean of its divisors is an integer number (1039245480).

Almost surely, 2^11550456021 is an apocalyptic number.

It is an amenable number.

11550456021 is a deficient number, since it is larger than the sum of its proper divisors (5077471659).

11550456021 is a wasteful number, since it uses less digits than its factorization.

11550456021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761756.

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 11550456021 in words is "eleven billion, five hundred fifty million, four hundred fifty-six thousand, twenty-one".