21374326421703 has 24 divisors (see below), whose sum is σ = 30898142260128. Its totient is φ = 14238422641152.

The previous prime is 21374326421687. The next prime is 21374326421711. The reversal of 21374326421703 is 30712462347312.

21374326421703 is a `hidden beast` number, since 2 + 1 + 3 + 7 + 432 + 6 + 42 + 170 + 3 = 666.

It is not a de Polignac number, because 21374326421703 - 2⁴ = 21374326421687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21374326521703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157679851 + ... + 157815347.

It is an arithmetic number, because the mean of its divisors is an integer number (1287422594172).

Almost surely, 2^{21374326421703} is an apocalyptic number.

21374326421703 is a deficient number, since it is larger than the sum of its proper divisors (9523815838425).

21374326421703 is a wasteful number, since it uses less digits than its factorization.

21374326421703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149063 (or 149060 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 45.

The spelling of 21374326421703 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred twenty-six million, four hundred twenty-one thousand, seven hundred three".