720340668369 has 24 divisors (see below), whose sum is σ = 1192099264512. Its totient is φ = 410596732800.

The previous prime is 720340668367. The next prime is 720340668379. The reversal of 720340668369 is 963866043027.

It is not a de Polignac number, because 720340668369 - 2¹ = 720340668367 is a prime.

It is a super-2 number, since 2×720340668369² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (720340668361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14231569 + ... + 14282094.

It is an arithmetic number, because the mean of its divisors is an integer number (49670802688).

Almost surely, 2^720340668369 is an apocalyptic number.

It is an amenable number.

720340668369 is a deficient number, since it is larger than the sum of its proper divisors (471758596143).

720340668369 is a wasteful number, since it uses less digits than its factorization.

720340668369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28514077 (or 28514074 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 720340668369 in words is "seven hundred twenty billion, three hundred forty million, six hundred sixty-eight thousand, three hundred sixty-nine".