77927637842 has 8 divisors (see below), whose sum is σ = 116913333936. Its totient is φ = 38956526532.

The previous prime is 77927637803. The next prime is 77927637847. The reversal of 77927637842 is 24873672977.

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

It is not an unprimeable number, because it can be changed into a prime (77927637847) 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, 3632828 + ... + 3654215.

It is an arithmetic number, because the mean of its divisors is an integer number (14614166742).

Almost surely, 2^77927637842 is an apocalyptic number.

77927637842 is a deficient number, since it is larger than the sum of its proper divisors (38985696094).

77927637842 is a wasteful number, since it uses less digits than its factorization.

77927637842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7292392.

The product of its digits is 49787136, while the sum is 62.

The spelling of 77927637842 in words is "seventy-seven billion, nine hundred twenty-seven million, six hundred thirty-seven thousand, eight hundred forty-two".