78463245063688 has 8 divisors (see below), whose sum is σ = 147118584494430. Its totient is φ = 39231622531840.

The previous prime is 78463245063661. The next prime is 78463245063689. The reversal of 78463245063688 is 88636054236487.

78463245063688 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 59483612603844 + 18979632459844 = 7712562^2 + 4356562^2 .

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

It is a super-2 number, since 2×78463245063688² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78463245063689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4903952816473 + ... + 4903952816488.

Almost surely, 2^{78463245063688} is an apocalyptic number.

It is an amenable number.

78463245063688 is a deficient number, since it is larger than the sum of its proper divisors (68655339430742).

78463245063688 is a wasteful number, since it uses less digits than its factorization.

78463245063688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9807905632967 (or 9807905632963 counting only the distinct ones).

The product of its (nonzero) digits is 1114767360, while the sum is 70.

The spelling of 78463245063688 in words is "seventy-eight trillion, four hundred sixty-three billion, two hundred forty-five million, sixty-three thousand, six hundred eighty-eight".