77972000218 has 64 divisors (see below), whose sum is σ = 140418220032. Its totient is φ = 31748967360.

The previous prime is 77972000173. The next prime is 77972000219. The reversal of 77972000218 is 81200027977.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (77972000219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33420180 + ... + 33422512.

It is an arithmetic number, because the mean of its divisors is an integer number (2194034688).

Almost surely, 2^77972000218 is an apocalyptic number.

77972000218 is a deficient number, since it is larger than the sum of its proper divisors (62446219814).

77972000218 is a wasteful number, since it uses less digits than its factorization.

77972000218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019.

The product of its (nonzero) digits is 98784, while the sum is 43.

The spelling of 77972000218 in words is "seventy-seven billion, nine hundred seventy-two million, two hundred eighteen", and thus it is an aban number.