72786668377 has 8 divisors (see below), whose sum is σ = 77667102560. Its totient is φ = 68011189920.

The previous prime is 72786668369. The next prime is 72786668389. The reversal of 72786668377 is 77386668727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72786668377 - 2³ = 72786668369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72786668347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26237499 + ... + 26240272.

It is an arithmetic number, because the mean of its divisors is an integer number (9708387820).

Almost surely, 2^72786668377 is an apocalyptic number.

It is an amenable number.

72786668377 is a deficient number, since it is larger than the sum of its proper divisors (4880434183).

72786668377 is a wasteful number, since it uses less digits than its factorization.

72786668377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52477863.

The product of its digits is 199148544, while the sum is 67.

The spelling of 72786668377 in words is "seventy-two billion, seven hundred eighty-six million, six hundred sixty-eight thousand, three hundred seventy-seven".