6434540780 has 12 divisors (see below), whose sum is σ = 13512535680. Its totient is φ = 2573816304.

The previous prime is 6434540773. The next prime is 6434540797. The reversal of 6434540780 is 870454346.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160863500 + ... + 160863539.

It is an arithmetic number, because the mean of its divisors is an integer number (1126044640).

Almost surely, 2^6434540780 is an apocalyptic number.

It is an amenable number.

6434540780 is an abundant number, since it is smaller than the sum of its proper divisors (7077994900).

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

6434540780 is a wasteful number, since it uses less digits than its factorization.

6434540780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321727048 (or 321727046 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 41.

The square root of 6434540780 is about 80215.5893826132. The cubic root of 6434540780 is about 1859.9696279775.

The spelling of 6434540780 in words is "six billion, four hundred thirty-four million, five hundred forty thousand, seven hundred eighty".