6945501816 has 96 divisors (see below), whose sum is σ = 21280896000. Its totient is φ = 2104691040.

The previous prime is 6945501811. The next prime is 6945501833. The reversal of 6945501816 is 6181055496.

6945501816 is a `hidden beast` number, since 6 + 94 + 550 + 1 + 8 + 1 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6945501811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141016 + ... + 183783.

It is an arithmetic number, because the mean of its divisors is an integer number (221676000).

Almost surely, 2^6945501816 is an apocalyptic number.

6945501816 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6945501816 is an abundant number, since it is smaller than the sum of its proper divisors (14335394184).

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

6945501816 is a wasteful number, since it uses less digits than its factorization.

6945501816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324831 (or 324815 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 6945501816 is about 83339.6773211896. The cubic root of 6945501816 is about 1907.9538970704.

The spelling of 6945501816 in words is "six billion, nine hundred forty-five million, five hundred one thousand, eight hundred sixteen".