72366777766427 has 2 divisors, whose sum is σ = 72366777766428. Its totient is φ = 72366777766426.

The previous prime is 72366777766277. The next prime is 72366777766429. The reversal of 72366777766427 is 72466777766327.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72366777766427 - 2⁴⁶ = 1998033588763 is a prime.

Together with 72366777766429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72366777766429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36183388883213 + 36183388883214.

It is an arithmetic number, because the mean of its divisors is an integer number (36183388883214).

Almost surely, 2^{72366777766427} is an apocalyptic number.

72366777766427 is a deficient number, since it is larger than the sum of its proper divisors (1).

72366777766427 is an equidigital number, since it uses as much as digits as its factorization.

72366777766427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7318708992, while the sum is 77.

The spelling of 72366777766427 in words is "seventy-two trillion, three hundred sixty-six billion, seven hundred seventy-seven million, seven hundred sixty-six thousand, four hundred twenty-seven".