78554876897 has 48 divisors (see below), whose sum is σ = 97106112000. Its totient is φ = 63249984000.

The previous prime is 78554876893. The next prime is 78554876899. The reversal of 78554876897 is 79867845587.

It is not a de Polignac number, because 78554876897 - 2² = 78554876893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78554876891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28043897 + ... + 28046697.

It is an arithmetic number, because the mean of its divisors is an integer number (2023044000).

Almost surely, 2^78554876897 is an apocalyptic number.

It is an amenable number.

78554876897 is a deficient number, since it is larger than the sum of its proper divisors (18551235103).

78554876897 is a wasteful number, since it uses less digits than its factorization.

78554876897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382 (or 3375 counting only the distinct ones).

The product of its digits is 948326400, while the sum is 74.

The spelling of 78554876897 in words is "seventy-eight billion, five hundred fifty-four million, eight hundred seventy-six thousand, eight hundred ninety-seven".