66401876235246 has 32 divisors (see below), whose sum is σ = 134026721711520. Its totient is φ = 21930144436224.

The previous prime is 66401876235241. The next prime is 66401876235269. The reversal of 66401876235246 is 64253267810466.

It is a super-3 number, since 3×66401876235246³ (a number of 42 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66401876235246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66401876235241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17552886 + ... + 20997798.

It is an arithmetic number, because the mean of its divisors is an integer number (4188335053485).

Almost surely, 2^{66401876235246} is an apocalyptic number.

66401876235246 is an abundant number, since it is smaller than the sum of its proper divisors (67624845476274).

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

66401876235246 is a wasteful number, since it uses less digits than its factorization.

66401876235246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3474500.

The product of its (nonzero) digits is 69672960, while the sum is 60.

The spelling of 66401876235246 in words is "sixty-six trillion, four hundred one billion, eight hundred seventy-six million, two hundred thirty-five thousand, two hundred forty-six".