78108256901 has 8 divisors (see below), whose sum is σ = 80984054880. Its totient is φ = 75244619632.

The previous prime is 78108256879. The next prime is 78108256909. The reversal of 78108256901 is 10965280187.

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

It is a cyclic number.

It is not a de Polignac number, because 78108256901 - 2²⁶ = 78041148037 is a prime.

It is a super-2 number, since 2×78108256901² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78108256909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3027095 + ... + 3052788.

It is an arithmetic number, because the mean of its divisors is an integer number (10123006860).

Almost surely, 2^78108256901 is an apocalyptic number.

It is an amenable number.

78108256901 is a deficient number, since it is larger than the sum of its proper divisors (2875797979).

78108256901 is a wasteful number, since it uses less digits than its factorization.

78108256901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6080355.

The product of its (nonzero) digits is 241920, while the sum is 47.

The spelling of 78108256901 in words is "seventy-eight billion, one hundred eight million, two hundred fifty-six thousand, nine hundred one".