78700166741 has 16 divisors (see below), whose sum is σ = 100246124160. Its totient is φ = 60147671040.

The previous prime is 78700166719. The next prime is 78700166749. The reversal of 78700166741 is 14766100787.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78700166741 - 2¹⁴ = 78700150357 is a prime.

It is a super-2 number, since 2×78700166741² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78700166749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17401580 + ... + 17406101.

It is an arithmetic number, because the mean of its divisors is an integer number (6265382760).

Almost surely, 2^78700166741 is an apocalyptic number.

It is an amenable number.

78700166741 is a deficient number, since it is larger than the sum of its proper divisors (21545957419).

78700166741 is a wasteful number, since it uses less digits than its factorization.

78700166741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34807724.

The product of its (nonzero) digits is 395136, while the sum is 47.

The spelling of 78700166741 in words is "seventy-eight billion, seven hundred million, one hundred sixty-six thousand, seven hundred forty-one".