21442055403015 has 96 divisors (see below), whose sum is σ = 40929965556480. Its totient is φ = 10318046035968.

The previous prime is 21442055403011. The next prime is 21442055403137. The reversal of 21442055403015 is 51030455024412.

21442055403015 is a `hidden beast` number, since 2 + 1 + 44 + 20 + 554 + 0 + 30 + 15 = 666.

It is not a de Polignac number, because 21442055403015 - 2² = 21442055403011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21442055403011) 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 95 ways as a sum of consecutive naturals, for example, 20636599 + ... + 21650711.

It is an arithmetic number, because the mean of its divisors is an integer number (426353807880).

Almost surely, 2^{21442055403015} is an apocalyptic number.

21442055403015 is a deficient number, since it is larger than the sum of its proper divisors (19487910153465).

21442055403015 is a wasteful number, since it uses less digits than its factorization.

21442055403015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014953 (or 1014950 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 21442055403015 in words is "twenty-one trillion, four hundred forty-two billion, fifty-five million, four hundred three thousand, fifteen".