78216113465337 has 4 divisors (see below), whose sum is σ = 104288151287120. Its totient is φ = 52144075643556.

The previous prime is 78216113465311. The next prime is 78216113465339. The reversal of 78216113465337 is 73356431161287.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 78216113465337 - 2⁷ = 78216113465209 is a prime.

It is a super-2 number, since 2×78216113465337² (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 (78216113465339) 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, 13036018910887 + ... + 13036018910892.

It is an arithmetic number, because the mean of its divisors is an integer number (26072037821780).

Almost surely, 2^{78216113465337} is an apocalyptic number.

It is an amenable number.

78216113465337 is a deficient number, since it is larger than the sum of its proper divisors (26072037821783).

78216113465337 is a wasteful number, since it uses less digits than its factorization.

78216113465337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26072037821782.

The product of its digits is 15240960, while the sum is 57.

The spelling of 78216113465337 in words is "seventy-eight trillion, two hundred sixteen billion, one hundred thirteen million, four hundred sixty-five thousand, three hundred thirty-seven".