21152055123413 has 16 divisors (see below), whose sum is σ = 22361597481600. Its totient is φ = 19952145918720.

The previous prime is 21152055123391. The next prime is 21152055123427. The reversal of 21152055123413 is 31432155025112.

It is a cyclic number.

It is not a de Polignac number, because 21152055123413 - 2⁶ = 21152055123349 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 (21152055123313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192922553 + ... + 193032161.

It is an arithmetic number, because the mean of its divisors is an integer number (1397599842600).

Almost surely, 2^{21152055123413} is an apocalyptic number.

It is an amenable number.

21152055123413 is a deficient number, since it is larger than the sum of its proper divisors (1209542358187).

21152055123413 is a wasteful number, since it uses less digits than its factorization.

21152055123413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153452.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 21152055123413 in words is "twenty-one trillion, one hundred fifty-two billion, fifty-five million, one hundred twenty-three thousand, four hundred thirteen".