78243165016027 has 8 divisors (see below), whose sum is σ = 89848610544960. Its totient is φ = 67386457908360.

The previous prime is 78243165015971. The next prime is 78243165016031. The reversal of 78243165016027 is 72061056134287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78243165016027 is a prime.

It is a super-2 number, since 2×78243165016027² (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 (78243169016027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187184605093 + ... + 187184605510.

It is an arithmetic number, because the mean of its divisors is an integer number (11231076318120).

Almost surely, 2^{78243165016027} is an apocalyptic number.

78243165016027 is a deficient number, since it is larger than the sum of its proper divisors (11605445528933).

78243165016027 is a wasteful number, since it uses less digits than its factorization.

78243165016027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374369210633.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 78243165016027 in words is "seventy-eight trillion, two hundred forty-three billion, one hundred sixty-five million, sixteen thousand, twenty-seven".