78949288472 has 8 divisors (see below), whose sum is σ = 148029915900. Its totient is φ = 39474644232.

The previous prime is 78949288427. The next prime is 78949288477. The reversal of 78949288472 is 27488294987.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78949288477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4934330522 + ... + 4934330537.

Almost surely, 2^78949288472 is an apocalyptic number.

It is an amenable number.

78949288472 is a deficient number, since it is larger than the sum of its proper divisors (69080627428).

78949288472 is a wasteful number, since it uses less digits than its factorization.

78949288472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9868661065 (or 9868661061 counting only the distinct ones).

The product of its digits is 130056192, while the sum is 68.

The spelling of 78949288472 in words is "seventy-eight billion, nine hundred forty-nine million, two hundred eighty-eight thousand, four hundred seventy-two".