8009720455 has 16 divisors (see below), whose sum is σ = 10568024064. Its totient is φ = 5779378080.

The previous prime is 8009720443. The next prime is 8009720497. The reversal of 8009720455 is 5540279008.

It is not a de Polignac number, because 8009720455 - 2⁵ = 8009720423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566367 + ... + 580336.

It is an arithmetic number, because the mean of its divisors is an integer number (660501504).

Almost surely, 2^8009720455 is an apocalyptic number.

8009720455 is a deficient number, since it is larger than the sum of its proper divisors (2558303609).

8009720455 is a wasteful number, since it uses less digits than its factorization.

8009720455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146846.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 8009720455 is about 89497.0415991501. The cubic root of 8009720455 is about 2000.8097100572.

The spelling of 8009720455 in words is "eight billion, nine million, seven hundred twenty thousand, four hundred fifty-five".