21204177714 has 12 divisors (see below), whose sum is σ = 45942385086. Its totient is φ = 7068059232.

The previous prime is 21204177713. The next prime is 21204177721. The reversal of 21204177714 is 41777140212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17973960489 + 3230217225 = 134067^2 + 56835^2 .

It is not an unprimeable number, because it can be changed into a prime (21204177713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 589004919 + ... + 589004954.

Almost surely, 2^21204177714 is an apocalyptic number.

21204177714 is an abundant number, since it is smaller than the sum of its proper divisors (24738207372).

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

21204177714 is a wasteful number, since it uses less digits than its factorization.

21204177714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178009881 (or 1178009878 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The spelling of 21204177714 in words is "twenty-one billion, two hundred four million, one hundred seventy-seven thousand, seven hundred fourteen".