21935920403135 has 32 divisors (see below), whose sum is σ = 27761305485312. Its totient is φ = 16614764979840.

The previous prime is 21935920403083. The next prime is 21935920403183. The reversal of 21935920403135 is 53130402953912.

It is not a de Polignac number, because 21935920403135 - 2¹⁸ = 21935920140991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21935920403135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17933717 + ... + 19117793.

It is an arithmetic number, because the mean of its divisors is an integer number (867540796416).

Almost surely, 2^{21935920403135} is an apocalyptic number.

21935920403135 is a deficient number, since it is larger than the sum of its proper divisors (5825385082177).

21935920403135 is a wasteful number, since it uses less digits than its factorization.

21935920403135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186703.

The product of its (nonzero) digits is 874800, while the sum is 47.

The spelling of 21935920403135 in words is "twenty-one trillion, nine hundred thirty-five billion, nine hundred twenty million, four hundred three thousand, one hundred thirty-five".