11446143455021 has 8 divisors (see below), whose sum is σ = 12589897836288. Its totient is φ = 10405584957900.

The previous prime is 11446143455011. The next prime is 11446143455027. The reversal of 11446143455021 is 12055434164411.

It is a happy number.

It is not a de Polignac number, because 11446143455021 - 2³⁰ = 11445069713197 is a prime.

It is a super-2 number, since 2×11446143455021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11446143455021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11446143455027) 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 7 ways as a sum of consecutive naturals, for example, 4299827165 + ... + 4299829826.

It is an arithmetic number, because the mean of its divisors is an integer number (1573737229536).

Almost surely, 2^{11446143455021} is an apocalyptic number.

11446143455021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11446143455021 is a deficient number, since it is larger than the sum of its proper divisors (1143754381267).

11446143455021 is an frugal number, since it uses more digits than its factorization.

11446143455021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8599657024 (or 8599657002 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 11446143455021 in words is "eleven trillion, four hundred forty-six billion, one hundred forty-three million, four hundred fifty-five thousand, twenty-one".