78838888883801 has 4 divisors (see below), whose sum is σ = 79575700929552. Its totient is φ = 78102076838052.

The previous prime is 78838888883747. The next prime is 78838888883813. The reversal of 78838888883801 is 10838888883887.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78838888883801 - 2⁶ = 78838888883737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78838888888801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368406022715 + ... + 368406022928.

It is an arithmetic number, because the mean of its divisors is an integer number (19893925232388).

Almost surely, 2^{78838888883801} is an apocalyptic number.

It is an amenable number.

78838888883801 is a deficient number, since it is larger than the sum of its proper divisors (736812045751).

78838888883801 is a wasteful number, since it uses less digits than its factorization.

78838888883801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736812045750.

The product of its (nonzero) digits is 8455716864, while the sum is 86.

Adding to 78838888883801 its sum of digits (86), we get a palindrome (78838888883887).

The spelling of 78838888883801 in words is "seventy-eight trillion, eight hundred thirty-eight billion, eight hundred eighty-eight million, eight hundred eighty-three thousand, eight hundred one".