6861512975 has 24 divisors (see below), whose sum is σ = 8723816640. Its totient is φ = 5350400000.

The previous prime is 6861512971. The next prime is 6861513023. The reversal of 6861512975 is 5792151686.

It is not a de Polignac number, because 6861512975 - 2² = 6861512971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6861512971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1441850 + ... + 1446600.

It is an arithmetic number, because the mean of its divisors is an integer number (363492360).

Almost surely, 2^6861512975 is an apocalyptic number.

6861512975 is a deficient number, since it is larger than the sum of its proper divisors (1862303665).

6861512975 is a wasteful number, since it uses less digits than its factorization.

6861512975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6211 (or 6206 counting only the distinct ones).

The product of its digits is 907200, while the sum is 50.

The square root of 6861512975 is about 82834.2500116950. The cubic root of 6861512975 is about 1900.2320099875.

The spelling of 6861512975 in words is "six billion, eight hundred sixty-one million, five hundred twelve thousand, nine hundred seventy-five".