6266981985 has 16 divisors (see below), whose sum is σ = 10938732480. Its totient is φ = 3038536640.

The previous prime is 6266981977. The next prime is 6266981989. The reversal of 6266981985 is 5891896626.

It is not a de Polignac number, because 6266981985 - 2³ = 6266981977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6266981989) 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, 18990690 + ... + 18991019.

It is an arithmetic number, because the mean of its divisors is an integer number (683670780).

Almost surely, 2^6266981985 is an apocalyptic number.

It is an amenable number.

6266981985 is a deficient number, since it is larger than the sum of its proper divisors (4671750495).

6266981985 is a wasteful number, since it uses less digits than its factorization.

6266981985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37981728.

The product of its digits is 11197440, while the sum is 60.

The square root of 6266981985 is about 79164.2721497520. The cubic root of 6266981985 is about 1843.6825650563.

The spelling of 6266981985 in words is "six billion, two hundred sixty-six million, nine hundred eighty-one thousand, nine hundred eighty-five".