861872270611 has 16 divisors (see below), whose sum is σ = 976449564288. Its totient is φ = 753876446400.

The previous prime is 861872270593. The next prime is 861872270617. The reversal of 861872270611 is 116072278168.

861872270611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 861872270611 - 2³³ = 853282336019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (861872270617) 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, 13566370 + ... + 13629751.

It is an arithmetic number, because the mean of its divisors is an integer number (61028097768).

Almost surely, 2^861872270611 is an apocalyptic number.

861872270611 is a deficient number, since it is larger than the sum of its proper divisors (114577293677).

861872270611 is a wasteful number, since it uses less digits than its factorization.

861872270611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27196242.

The product of its (nonzero) digits is 451584, while the sum is 49.

The spelling of 861872270611 in words is "eight hundred sixty-one billion, eight hundred seventy-two million, two hundred seventy thousand, six hundred eleven".