78217467005 has 16 divisors (see below), whose sum is σ = 98348304384. Its totient is φ = 59604990720.

The previous prime is 78217466969. The next prime is 78217467017. The reversal of 78217467005 is 50076471287.

It is a happy number.

It is not a de Polignac number, because 78217467005 - 2³² = 73922499709 is a prime.

It is a super-2 number, since 2×78217467005² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1383389 + ... + 1438818.

It is an arithmetic number, because the mean of its divisors is an integer number (6146769024).

Almost surely, 2^78217467005 is an apocalyptic number.

It is an amenable number.

78217467005 is a deficient number, since it is larger than the sum of its proper divisors (20130837379).

78217467005 is a wasteful number, since it uses less digits than its factorization.

78217467005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822476.

The product of its (nonzero) digits is 658560, while the sum is 47.

The spelling of 78217467005 in words is "seventy-eight billion, two hundred seventeen million, four hundred sixty-seven thousand, five".