78448755784488 has 32 divisors (see below), whose sum is σ = 201422481070560. Its totient is φ = 25442839713600.

The previous prime is 78448755784463. The next prime is 78448755784523. The reversal of 78448755784488 is 88448755784487.

It is a super-3 number, since 3×78448755784488³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44171595838 + ... + 44171597613.

It is an arithmetic number, because the mean of its divisors is an integer number (6294452533455).

Almost surely, 2^{78448755784488} is an apocalyptic number.

It is an amenable number.

78448755784488 is an abundant number, since it is smaller than the sum of its proper divisors (122973725286072).

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

78448755784488 is a wasteful number, since it uses less digits than its factorization.

78448755784488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88343193497 (or 88343193493 counting only the distinct ones).

The product of its digits is 71932313600, while the sum is 87.

Subtracting 78448755784488 from its reverse (88448755784487), we obtain a palindrome (9999999999999).

The spelling of 78448755784488 in words is "seventy-eight trillion, four hundred forty-eight billion, seven hundred fifty-five million, seven hundred eighty-four thousand, four hundred eighty-eight".