77161660027 has 8 divisors (see below), whose sum is σ = 79261956176. Its totient is φ = 75062145312.

The previous prime is 77161660003. The next prime is 77161660031. The reversal of 77161660027 is 72006616177.

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 77161660027 - 2¹⁵ = 77161627259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77161660727) 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, 7648 + ... + 392914.

It is an arithmetic number, because the mean of its divisors is an integer number (9907744522).

Almost surely, 2^77161660027 is an apocalyptic number.

77161660027 is a deficient number, since it is larger than the sum of its proper divisors (2100296149).

77161660027 is a wasteful number, since it uses less digits than its factorization.

77161660027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390717.

The product of its (nonzero) digits is 148176, while the sum is 43.

The spelling of 77161660027 in words is "seventy-seven billion, one hundred sixty-one million, six hundred sixty thousand, twenty-seven".