77667670072 has 16 divisors (see below), whose sum is σ = 150324523200. Its totient is φ = 37581130560.

The previous prime is 77667670057. The next prime is 77667670111. The reversal of 77667670072 is 27007676677.

It is a junction number, because it is equal to n+sod(n) for n = 77667669995 and 77667670022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156587797 + ... + 156588292.

It is an arithmetic number, because the mean of its divisors is an integer number (9395282700).

Almost surely, 2^77667670072 is an apocalyptic number.

It is an amenable number.

77667670072 is a deficient number, since it is larger than the sum of its proper divisors (72656853128).

77667670072 is a wasteful number, since it uses less digits than its factorization.

77667670072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313176126 (or 313176122 counting only the distinct ones).

The product of its (nonzero) digits is 7260624, while the sum is 55.

The spelling of 77667670072 in words is "seventy-seven billion, six hundred sixty-seven million, six hundred seventy thousand, seventy-two".