77732130667 has 8 divisors (see below), whose sum is σ = 80166158336. Its totient is φ = 75326571432.

The previous prime is 77732130661. The next prime is 77732130673. The reversal of 77732130667 is 76603123777.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (77732130661) and next prime (77732130673).

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-77732130667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77732130667.

It is not an unprimeable number, because it can be changed into a prime (77732130661) 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, 7111563 + ... + 7122484.

It is an arithmetic number, because the mean of its divisors is an integer number (10020769792).

Almost surely, 2^77732130667 is an apocalyptic number.

77732130667 is a deficient number, since it is larger than the sum of its proper divisors (2434027669).

77732130667 is a wasteful number, since it uses less digits than its factorization.

77732130667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14234217.

The product of its (nonzero) digits is 1555848, while the sum is 49.

The spelling of 77732130667 in words is "seventy-seven billion, seven hundred thirty-two million, one hundred thirty thousand, six hundred sixty-seven".