78357743027 has 4 divisors (see below), whose sum is σ = 78363576720. Its totient is φ = 78351909336.

The previous prime is 78357742997. The next prime is 78357743033. The reversal of 78357743027 is 72034775387.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72034775387 = 251 ⋅286991137.

It is a cyclic number.

It is not a de Polignac number, because 78357743027 - 2⁶ = 78357742963 is a prime.

It is a super-3 number, since 3×78357743027³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78357743027.

It is not an unprimeable number, because it can be changed into a prime (78357743047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2896652 + ... + 2923577.

It is an arithmetic number, because the mean of its divisors is an integer number (19590894180).

Almost surely, 2^78357743027 is an apocalyptic number.

78357743027 is a deficient number, since it is larger than the sum of its proper divisors (5833693).

78357743027 is a wasteful number, since it uses less digits than its factorization.

78357743027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5833692.

The product of its (nonzero) digits is 6914880, while the sum is 53.

The spelling of 78357743027 in words is "seventy-eight billion, three hundred fifty-seven million, seven hundred forty-three thousand, twenty-seven".