1416840276721 has 3 divisors (see below), whose sum is σ = 1416841467033. Its totient is φ = 1416839086410.

The previous prime is 1416840276689. The next prime is 1416840276737. The reversal of 1416840276721 is 1276720486141.

The square root of 1416840276721 is 1190311.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1416840276721 - 2⁵ = 1416840276689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1416840276751) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 595156 + ... + 1785466.

It is an arithmetic number, because the mean of its divisors is an integer number (472280489011).

Almost surely, 2^{1416840276721} is an apocalyptic number.

1416840276721 is the 1190311-st square number.

1416840276721 is the 595156-th centered octagonal number.

It is an amenable number.

1416840276721 is a deficient number, since it is larger than the sum of its proper divisors (1190312).

1416840276721 is an frugal number, since it uses more digits than its factorization.

1416840276721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380622 (or 1190311 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

Multiplying 1416840276721 by its sum of digits (49), we get a square (69425173559329 = 8332177²).

The spelling of 1416840276721 in words is "one trillion, four hundred sixteen billion, eight hundred forty million, two hundred seventy-six thousand, seven hundred twenty-one".