21498473009326 has 64 divisors (see below), whose sum is σ = 33753346744320. Its totient is φ = 10257059393280.

The previous prime is 21498473009267. The next prime is 21498473009339. The reversal of 21498473009326 is 62390037489412.

It is a super-6 number, since 6×21498473009326⁶ (a number of 81 digits) contains 666666 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 991936426 + ... + 991958098.

It is an arithmetic number, because the mean of its divisors is an integer number (527396042880).

Almost surely, 2^{21498473009326} is an apocalyptic number.

21498473009326 is a deficient number, since it is larger than the sum of its proper divisors (12254873734994).

21498473009326 is a wasteful number, since it uses less digits than its factorization.

21498473009326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22481.

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 21498473009326 in words is "twenty-one trillion, four hundred ninety-eight billion, four hundred seventy-three million, nine thousand, three hundred twenty-six".