8742720055 has 16 divisors (see below), whose sum is σ = 10594400544. Its totient is φ = 6925726080.

The previous prime is 8742720017. The next prime is 8742720071. The reversal of 8742720055 is 5500272478.

It is a happy number.

It is not a de Polignac number, because 8742720055 - 2⁷ = 8742719927 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, 211000 + ... + 249010.

It is an arithmetic number, because the mean of its divisors is an integer number (662150034).

Almost surely, 2^8742720055 is an apocalyptic number.

8742720055 is a deficient number, since it is larger than the sum of its proper divisors (1851680489).

8742720055 is a wasteful number, since it uses less digits than its factorization.

8742720055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38466.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 8742720055 is about 93502.5136293137. The cubic root of 8742720055 is about 2060.0710107642.

The spelling of 8742720055 in words is "eight billion, seven hundred forty-two million, seven hundred twenty thousand, fifty-five".