1616665066650 has 96 divisors (see below), whose sum is σ = 4575210828480. Its totient is φ = 419459031360.

The previous prime is 1616665066631. The next prime is 1616665066663. The reversal of 1616665066650 is 566605666161.

It is a super-2 number, since 2×1616665066650² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16132884 + ... + 16232783.

It is an arithmetic number, because the mean of its divisors is an integer number (47658446130).

Almost surely, 2^{1616665066650} is an apocalyptic number.

1616665066650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1616665066650 is an abundant number, since it is smaller than the sum of its proper divisors (2958545761830).

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

1616665066650 is a wasteful number, since it uses less digits than its factorization.

1616665066650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32365725 (or 32365714 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 1616665066650 in words is "one trillion, six hundred sixteen billion, six hundred sixty-five million, sixty-six thousand, six hundred fifty".