6861161560 has 64 divisors (see below), whose sum is σ = 16850138400. Its totient is φ = 2493619200.

The previous prime is 6861161513. The next prime is 6861161561. The reversal of 6861161560 is 651611686.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6861161561) 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, 1203196 + ... + 1208884.

Almost surely, 2^6861161560 is an apocalyptic number.

It is an amenable number.

6861161560 is an abundant number, since it is smaller than the sum of its proper divisors (9988976840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6861161560 is a wasteful number, since it uses less digits than its factorization.

6861161560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8452 (or 8448 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 6861161560 is about 82832.1287907054. The cubic root of 6861161560 is about 1900.1995690650.

The spelling of 6861161560 in words is "six billion, eight hundred sixty-one million, one hundred sixty-one thousand, five hundred sixty".