78216304738627 has 4 divisors (see below), whose sum is σ = 85326877896696. Its totient is φ = 71105731580560.

The previous prime is 78216304738577. The next prime is 78216304738667. The reversal of 78216304738627 is 72683740361287.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78216304738627 - 2²³ = 78216296350019 is a prime.

It is a super-2 number, since 2×78216304738627² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78216304738667) 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, 3555286579018 + ... + 3555286579039.

It is an arithmetic number, because the mean of its divisors is an integer number (21331719474174).

Almost surely, 2^{78216304738627} is an apocalyptic number.

78216304738627 is a deficient number, since it is larger than the sum of its proper divisors (7110573158069).

78216304738627 is a wasteful number, since it uses less digits than its factorization.

78216304738627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7110573158068.

The product of its (nonzero) digits is 113799168, while the sum is 64.

The spelling of 78216304738627 in words is "seventy-eight trillion, two hundred sixteen billion, three hundred four million, seven hundred thirty-eight thousand, six hundred twenty-seven".