11546220454021 has 4 divisors (see below), whose sum is σ = 12595876858944. Its totient is φ = 10496564049100.

The previous prime is 11546220454019. The next prime is 11546220454033. The reversal of 11546220454021 is 12045402264511.

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 11546220454021 - 2¹ = 11546220454019 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 (11546220454061) 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, 524828202445 + ... + 524828202466.

It is an arithmetic number, because the mean of its divisors is an integer number (3148969214736).

Almost surely, 2^{11546220454021} is an apocalyptic number.

11546220454021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11546220454021 is a deficient number, since it is larger than the sum of its proper divisors (1049656404923).

11546220454021 is a wasteful number, since it uses less digits than its factorization.

11546220454021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049656404922.

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 11546220454021 in words is "eleven trillion, five hundred forty-six billion, two hundred twenty million, four hundred fifty-four thousand, twenty-one".