14027796721 has 9 divisors (see below), whose sum is σ = 14903639499. Its totient is φ = 13200737184.

The previous prime is 14027796707. The next prime is 14027796737. The reversal of 14027796721 is 12769772041.

The square root of 14027796721 is 118439.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10921295025 + 3106501696 = 104505^2 + 55736^2 .

It is not a de Polignac number, because 14027796721 - 2⁵ = 14027796689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14027796751) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2009980 + ... + 2016946.

Almost surely, 2^14027796721 is an apocalyptic number.

14027796721 is the 118439-th square number.

14027796721 is the 59220-th centered octagonal number.

It is an amenable number.

14027796721 is a deficient number, since it is larger than the sum of its proper divisors (875842778).

14027796721 is an frugal number, since it uses more digits than its factorization.

14027796721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13968 (or 6984 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 46.

The spelling of 14027796721 in words is "fourteen billion, twenty-seven million, seven hundred ninety-six thousand, seven hundred twenty-one".