8661255007 has 16 divisors (see below), whose sum is σ = 8860370400. Its totient is φ = 8464199040.

The previous prime is 8661254977. The next prime is 8661255019. The reversal of 8661255007 is 7005521668.

It is a cyclic number.

It is not a de Polignac number, because 8661255007 - 2¹⁹ = 8660730719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8661255037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8101669 + ... + 8102737.

It is an arithmetic number, because the mean of its divisors is an integer number (553773150).

Almost surely, 2^8661255007 is an apocalyptic number.

8661255007 is a deficient number, since it is larger than the sum of its proper divisors (199115393).

8661255007 is a wasteful number, since it uses less digits than its factorization.

8661255007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866.

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

The square root of 8661255007 is about 93065.8638116039. The cubic root of 8661255007 is about 2053.6524224556.

The spelling of 8661255007 in words is "eight billion, six hundred sixty-one million, two hundred fifty-five thousand, seven".