77216633394 has 8 divisors (see below), whose sum is σ = 154433266800. Its totient is φ = 25738877796.

The previous prime is 77216633393. The next prime is 77216633449. The reversal of 77216633394 is 49333661277.

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

77216633394 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (77216633393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6434719444 + ... + 6434719455.

It is an arithmetic number, because the mean of its divisors is an integer number (19304158350).

Almost surely, 2^77216633394 is an apocalyptic number.

77216633394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77216633394 is a wasteful number, since it uses less digits than its factorization.

77216633394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12869438904.

The product of its digits is 3429216, while the sum is 51.

The spelling of 77216633394 in words is "seventy-seven billion, two hundred sixteen million, six hundred thirty-three thousand, three hundred ninety-four".