2461666166646 has 64 divisors (see below), whose sum is σ = 5020718786496. Its totient is φ = 804490444800.

The previous prime is 2461666166639. The next prime is 2461666166647. The reversal of 2461666166646 is 6466616661642.

It is a happy number.

It is a super-2 number, since 2×2461666166646² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2461666166646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2461666166647) 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, 142111666 + ... + 142128986.

It is an arithmetic number, because the mean of its divisors is an integer number (78448731039).

Almost surely, 2^{2461666166646} is an apocalyptic number.

2461666166646 is an abundant number, since it is smaller than the sum of its proper divisors (2559052619850).

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

2461666166646 is a wasteful number, since it uses less digits than its factorization.

2461666166646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19697.

The product of its digits is 53747712, while the sum is 60.

The spelling of 2461666166646 in words is "two trillion, four hundred sixty-one billion, six hundred sixty-six million, one hundred sixty-six thousand, six hundred forty-six".