21506254700714 has 16 divisors (see below), whose sum is σ = 36867943202496. Its totient is φ = 9216946800000.

The previous prime is 21506254700701. The next prime is 21506254700741. The reversal of 21506254700714 is 41700745260512.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6698714 + ... + 9374714.

It is an arithmetic number, because the mean of its divisors is an integer number (2304246450156).

Almost surely, 2^{21506254700714} is an apocalyptic number.

21506254700714 is a deficient number, since it is larger than the sum of its proper divisors (15361688501782).

21506254700714 is a wasteful number, since it uses less digits than its factorization.

21506254700714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3250061.

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 21506254700714 in words is "twenty-one trillion, five hundred six billion, two hundred fifty-four million, seven hundred thousand, seven hundred fourteen".