78454768906 has 8 divisors (see below), whose sum is σ = 118461505824. Its totient is φ = 38967600300.

The previous prime is 78454768891. The next prime is 78454768913. The reversal of 78454768906 is 60986745487.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129891700 + ... + 129892303.

It is an arithmetic number, because the mean of its divisors is an integer number (14807688228).

Almost surely, 2^78454768906 is an apocalyptic number.

78454768906 is a deficient number, since it is larger than the sum of its proper divisors (40006736918).

78454768906 is a wasteful number, since it uses less digits than its factorization.

78454768906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259784156.

The product of its (nonzero) digits is 81285120, while the sum is 64.

The spelling of 78454768906 in words is "seventy-eight billion, four hundred fifty-four million, seven hundred sixty-eight thousand, nine hundred six".