21356032146055 has 16 divisors (see below), whose sum is σ = 26742572527104. Its totient is φ = 16341331204000.

The previous prime is 21356032146041. The next prime is 21356032146077. The reversal of 21356032146055 is 55064123065312.

It is not a de Polignac number, because 21356032146055 - 2⁷ = 21356032145927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1039939 + ... + 6617668.

It is an arithmetic number, because the mean of its divisors is an integer number (1671410782944).

Almost surely, 2^{21356032146055} is an apocalyptic number.

21356032146055 is a deficient number, since it is larger than the sum of its proper divisors (5386540381049).

21356032146055 is a wasteful number, since it uses less digits than its factorization.

21356032146055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7681886.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 21356032146055 in words is "twenty-one trillion, three hundred fifty-six billion, thirty-two million, one hundred forty-six thousand, fifty-five".