78151212745718 has 16 divisors (see below), whose sum is σ = 133976799545760. Its totient is φ = 33492553895616.

The previous prime is 78151212745703. The next prime is 78151212745747. The reversal of 78151212745718 is 81754721215187.

It is a super-2 number, since 2×78151212745718² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67992671 + ... + 69132522.

It is an arithmetic number, because the mean of its divisors is an integer number (8373549971610).

Almost surely, 2^{78151212745718} is an apocalyptic number.

78151212745718 is a deficient number, since it is larger than the sum of its proper divisors (55825586800042).

78151212745718 is a wasteful number, since it uses less digits than its factorization.

78151212745718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137165911.

The product of its digits is 8780800, while the sum is 59.

The spelling of 78151212745718 in words is "seventy-eight trillion, one hundred fifty-one billion, two hundred twelve million, seven hundred forty-five thousand, seven hundred eighteen".