77130943455 has 8 divisors (see below), whose sum is σ = 123409509552. Its totient is φ = 41136503168.

The previous prime is 77130943451. The next prime is 77130943489. The reversal of 77130943455 is 55434903177.

It is a happy number.

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 77130943455 - 2² = 77130943451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77130943451) 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, 2571031434 + ... + 2571031463.

It is an arithmetic number, because the mean of its divisors is an integer number (15426188694).

Almost surely, 2^77130943455 is an apocalyptic number.

77130943455 is a deficient number, since it is larger than the sum of its proper divisors (46278566097).

77130943455 is a wasteful number, since it uses less digits than its factorization.

77130943455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142062905.

The product of its (nonzero) digits is 1587600, while the sum is 48.

The spelling of 77130943455 in words is "seventy-seven billion, one hundred thirty million, nine hundred forty-three thousand, four hundred fifty-five".