78181373062672 has 20 divisors (see below), whose sum is σ = 165246993064656. Its totient is φ = 35536987755680.

The previous prime is 78181373062633. The next prime is 78181373062699. The reversal of 78181373062672 is 27626037318187.

It is a super-2 number, since 2×78181373062672² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78181373062672.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222106173298 + ... + 222106173649.

Almost surely, 2^{78181373062672} is an apocalyptic number.

It is an amenable number.

78181373062672 is an abundant number, since it is smaller than the sum of its proper divisors (87065620001984).

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

78181373062672 is a wasteful number, since it uses less digits than its factorization.

78181373062672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444212346966 (or 444212346960 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 61.

The spelling of 78181373062672 in words is "seventy-eight trillion, one hundred eighty-one billion, three hundred seventy-three million, sixty-two thousand, six hundred seventy-two".