78488765025488 has 10 divisors (see below), whose sum is σ = 152071982236914. Its totient is φ = 39244382512736.

The previous prime is 78488765025479. The next prime is 78488765025497. The reversal of 78488765025488 is 88452056788487.

It is an interprime number because it is at equal distance from previous prime (78488765025479) and next prime (78488765025497).

It can be written as a sum of positive squares in only one way, i.e., 54836572349584 + 23652192675904 = 7405172^2 + 4863352^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2452773907031 + ... + 2452773907062.

Almost surely, 2^{78488765025488} is an apocalyptic number.

It is an amenable number.

78488765025488 is a deficient number, since it is larger than the sum of its proper divisors (73583217211426).

78488765025488 is a wasteful number, since it uses less digits than its factorization.

78488765025488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4905547814101 (or 4905547814095 counting only the distinct ones).

The product of its (nonzero) digits is 7707033600, while the sum is 80.

The spelling of 78488765025488 in words is "seventy-eight trillion, four hundred eighty-eight billion, seven hundred sixty-five million, twenty-five thousand, four hundred eighty-eight".