21166304354214 has 16 divisors (see below), whose sum is σ = 42514293727152. Its totient is φ = 7025153948288.

The previous prime is 21166304354201. The next prime is 21166304354219. The reversal of 21166304354214 is 41245340366112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21166304354219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7570207599 + ... + 7570210394.

It is an arithmetic number, because the mean of its divisors is an integer number (2657143357947).

Almost surely, 2^{21166304354214} is an apocalyptic number.

21166304354214 is an abundant number, since it is smaller than the sum of its proper divisors (21347989372938).

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

21166304354214 is a wasteful number, since it uses less digits than its factorization.

21166304354214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15140418231.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 21166304354214 in words is "twenty-one trillion, one hundred sixty-six billion, three hundred four million, three hundred fifty-four thousand, two hundred fourteen".