6461745875 has 16 divisors (see below), whose sum is σ = 8684588640. Its totient is φ = 4771749600.

The previous prime is 6461745847. The next prime is 6461745877. The reversal of 6461745875 is 5785471646.

It is not a de Polignac number, because 6461745875 - 2¹² = 6461741779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6461745877) 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, 1986605 + ... + 1989854.

It is an arithmetic number, because the mean of its divisors is an integer number (542786790).

Almost surely, 2^6461745875 is an apocalyptic number.

6461745875 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6461745875 is a deficient number, since it is larger than the sum of its proper divisors (2222842765).

6461745875 is a wasteful number, since it uses less digits than its factorization.

6461745875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976487 (or 3976477 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 53.

The square root of 6461745875 is about 80384.9853828437. The cubic root of 6461745875 is about 1862.5872457366.

The spelling of 6461745875 in words is "six billion, four hundred sixty-one million, seven hundred forty-five thousand, eight hundred seventy-five".