6651145116 has 96 divisors (see below), whose sum is σ = 21498677760. Its totient is φ = 1727568000.

The previous prime is 6651145103. The next prime is 6651145159. The reversal of 6651145116 is 6115411566.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 391585 + ... + 408216.

It is an arithmetic number, because the mean of its divisors is an integer number (223944560).

Almost surely, 2^6651145116 is an apocalyptic number.

6651145116 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6651145116 is an abundant number, since it is smaller than the sum of its proper divisors (14847532644).

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

6651145116 is a wasteful number, since it uses less digits than its factorization.

6651145116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799832 (or 799824 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 6651145116 is about 81554.5530059481. The cubic root of 6651145116 is about 1880.6102888883.

The spelling of 6651145116 in words is "six billion, six hundred fifty-one million, one hundred forty-five thousand, one hundred sixteen".