7861085572 has 12 divisors (see below), whose sum is σ = 13832905996. Its totient is φ = 3908826720.

The previous prime is 7861085569. The next prime is 7861085579. The reversal of 7861085572 is 2755801687.

It can be written as a sum of positive squares in 2 ways, for example, as 524135236 + 7336950336 = 22894^2 + 85656^2 .

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7861085579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5428203 + ... + 5429650.

Almost surely, 2^7861085572 is an apocalyptic number.

It is an amenable number.

7861085572 is a deficient number, since it is larger than the sum of its proper divisors (5971820424).

7861085572 is a wasteful number, since it uses less digits than its factorization.

7861085572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10858038 (or 10858036 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 49.

The square root of 7861085572 is about 88662.7631647018. The cubic root of 7861085572 is about 1988.3561394785.

The spelling of 7861085572 in words is "seven billion, eight hundred sixty-one million, eighty-five thousand, five hundred seventy-two".