72366777766278 has 48 divisors (see below), whose sum is σ = 160988654146320. Its totient is φ = 23480862495552.

The previous prime is 72366777766277. The next prime is 72366777766427. The reversal of 72366777766278 is 87266777766327.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72366777766197 and 72366777766206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72366777766277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159324633 + ... + 159778196.

It is an arithmetic number, because the mean of its divisors is an integer number (3353930294715).

Almost surely, 2^{72366777766278} is an apocalyptic number.

72366777766278 is an abundant number, since it is smaller than the sum of its proper divisors (88621876380042).

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

72366777766278 is a wasteful number, since it uses less digits than its factorization.

72366777766278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319103173 (or 319103170 counting only the distinct ones).

The product of its digits is 14637417984, while the sum is 81.

The spelling of 72366777766278 in words is "seventy-two trillion, three hundred sixty-six billion, seven hundred seventy-seven million, seven hundred sixty-six thousand, two hundred seventy-eight".