6501791634 has 32 divisors (see below), whose sum is σ = 14455601664. Its totient is φ = 1936016640.

The previous prime is 6501791633. The next prime is 6501791657. The reversal of 6501791634 is 4361971056.

It is not an unprimeable number, because it can be changed into a prime (6501791633) 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, 1342039 + ... + 1346874.

It is an arithmetic number, because the mean of its divisors is an integer number (451737552).

Almost surely, 2^6501791634 is an apocalyptic number.

6501791634 is an abundant number, since it is smaller than the sum of its proper divisors (7953810030).

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

6501791634 is a wasteful number, since it uses less digits than its factorization.

6501791634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688962.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 6501791634 is about 80633.6879598099. The cubic root of 6501791634 is about 1866.4270317309.

It can be divided in two parts, 65017 and 91634, that added together give a palindrome (156651).

The spelling of 6501791634 in words is "six billion, five hundred one million, seven hundred ninety-one thousand, six hundred thirty-four".