78216113120278 has 8 divisors (see below), whose sum is σ = 134084765349072. Its totient is φ = 33521191337256.

The previous prime is 78216113120263. The next prime is 78216113120311. The reversal of 78216113120278 is 87202131161287.

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

It is a super-2 number, since 2×78216113120278² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 2793432611425 + ... + 2793432611452.

It is an arithmetic number, because the mean of its divisors is an integer number (16760595668634).

Almost surely, 2^{78216113120278} is an apocalyptic number.

78216113120278 is a deficient number, since it is larger than the sum of its proper divisors (55868652228794).

78216113120278 is a wasteful number, since it uses less digits than its factorization.

78216113120278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5586865222886.

The product of its (nonzero) digits is 451584, while the sum is 49.

The spelling of 78216113120278 in words is "seventy-eight trillion, two hundred sixteen billion, one hundred thirteen million, one hundred twenty thousand, two hundred seventy-eight".