66819273462798 has 32 divisors (see below), whose sum is σ = 134045321220096. Its totient is φ = 22205305519488.

The previous prime is 66819273462763. The next prime is 66819273462829. The reversal of 66819273462798 is 89726437291866.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25402665 + ... + 27909387.

It is an arithmetic number, because the mean of its divisors is an integer number (4188916288128).

Almost surely, 2^{66819273462798} is an apocalyptic number.

66819273462798 is an abundant number, since it is smaller than the sum of its proper divisors (67226047757298).

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

66819273462798 is a wasteful number, since it uses less digits than its factorization.

66819273462798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520248.

The product of its digits is 2633637888, while the sum is 78.

The spelling of 66819273462798 in words is "sixty-six trillion, eight hundred nineteen billion, two hundred seventy-three million, four hundred sixty-two thousand, seven hundred ninety-eight".