78216344476007 has 16 divisors (see below), whose sum is σ = 80242302599424. Its totient is φ = 76196056728000.

The previous prime is 78216344476003. The next prime is 78216344476027. The reversal of 78216344476007 is 70067444361287.

It is not a de Polignac number, because 78216344476007 - 2² = 78216344476003 is a prime.

It is a super-2 number, since 2×78216344476007² (a number of 29 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 (78216344476003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158862782 + ... + 159354372.

It is an arithmetic number, because the mean of its divisors is an integer number (5015143912464).

Almost surely, 2^{78216344476007} is an apocalyptic number.

78216344476007 is a deficient number, since it is larger than the sum of its proper divisors (2025958123417).

78216344476007 is a wasteful number, since it uses less digits than its factorization.

78216344476007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497350.

The product of its (nonzero) digits is 37933056, while the sum is 59.

The spelling of 78216344476007 in words is "seventy-eight trillion, two hundred sixteen billion, three hundred forty-four million, four hundred seventy-six thousand, seven".