6501985842 has 16 divisors (see below), whose sum is σ = 14186151072. Its totient is φ = 1970298720.

The previous prime is 6501985829. The next prime is 6501985843. The reversal of 6501985842 is 2485891056.

It is a junction number, because it is equal to n+sod(n) for n = 6501985791 and 6501985800.

It is not an unprimeable number, because it can be changed into a prime (6501985843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49257403 + ... + 49257534.

It is an arithmetic number, because the mean of its divisors is an integer number (886634442).

Almost surely, 2^6501985842 is an apocalyptic number.

6501985842 is an abundant number, since it is smaller than the sum of its proper divisors (7684165230).

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

6501985842 is a wasteful number, since it uses less digits than its factorization.

6501985842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98514953.

The product of its (nonzero) digits is 691200, while the sum is 48.

The square root of 6501985842 is about 80634.8922117466. The cubic root of 6501985842 is about 1866.4456148883.

The spelling of 6501985842 in words is "six billion, five hundred one million, nine hundred eighty-five thousand, eight hundred forty-two".