21470066073726 has 32 divisors (see below), whose sum is σ = 43434522673920. Its totient is φ = 7074466150656.

The previous prime is 21470066073683. The next prime is 21470066073809. The reversal of 21470066073726 is 62737066007412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21496296 + ... + 22472891.

It is an arithmetic number, because the mean of its divisors is an integer number (1357328833560).

Almost surely, 2^{21470066073726} is an apocalyptic number.

21470066073726 is an abundant number, since it is smaller than the sum of its proper divisors (21964456600194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21470066073726 is a wasteful number, since it uses less digits than its factorization.

21470066073726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43970128.

The product of its (nonzero) digits is 3556224, while the sum is 51.

The spelling of 21470066073726 in words is "twenty-one trillion, four hundred seventy billion, sixty-six million, seventy-three thousand, seven hundred twenty-six".