77970727663 has 8 divisors (see below), whose sum is σ = 79871049360. Its totient is φ = 76089698880.

The previous prime is 77970727573. The next prime is 77970727669. The reversal of 77970727663 is 36672707977.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77970727663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77970727669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4815048 + ... + 4831213.

It is an arithmetic number, because the mean of its divisors is an integer number (9983881170).

Almost surely, 2^77970727663 is an apocalyptic number.

77970727663 is a deficient number, since it is larger than the sum of its proper divisors (1900321697).

77970727663 is a wasteful number, since it uses less digits than its factorization.

77970727663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9646457.

The product of its (nonzero) digits is 32672808, while the sum is 61.

The spelling of 77970727663 in words is "seventy-seven billion, nine hundred seventy million, seven hundred twenty-seven thousand, six hundred sixty-three".