21442377034477 has 16 divisors (see below), whose sum is σ = 24517163856384. Its totient is φ = 18370488654000.

The previous prime is 21442377034409. The next prime is 21442377034489. The reversal of 21442377034477 is 77443077324412.

It is not a de Polignac number, because 21442377034477 - 2¹⁵ = 21442377001709 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 (21442377034577) 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, 459216702 + ... + 459263392.

It is an arithmetic number, because the mean of its divisors is an integer number (1532322741024).

Almost surely, 2^{21442377034477} is an apocalyptic number.

It is an amenable number.

21442377034477 is a deficient number, since it is larger than the sum of its proper divisors (3074786821907).

21442377034477 is a wasteful number, since it uses less digits than its factorization.

21442377034477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76320.

The product of its (nonzero) digits is 22127616, while the sum is 55.

The spelling of 21442377034477 in words is "twenty-one trillion, four hundred forty-two billion, three hundred seventy-seven million, thirty-four thousand, four hundred seventy-seven".