6616611051660 has 96 divisors (see below), whose sum is σ = 21063733447680. Its totient is φ = 1723396360896.

The previous prime is 6616611051641. The next prime is 6616611051667. The reversal of 6616611051660 is 661501166166.

6616611051660 is a `hidden beast` number, since 6 + 6 + 1 + 6 + 61 + 10 + 516 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (6616611051667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142453332 + ... + 142499771.

It is an arithmetic number, because the mean of its divisors is an integer number (219413890080).

Almost surely, 2^{6616611051660} is an apocalyptic number.

6616611051660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6616611051660 is an abundant number, since it is smaller than the sum of its proper divisors (14447122396020).

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

6616611051660 is a wasteful number, since it uses less digits than its factorization.

6616611051660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284953164 (or 284953156 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 6616611051660 in words is "six trillion, six hundred sixteen billion, six hundred eleven million, fifty-one thousand, six hundred sixty".