78270918693 has 8 divisors (see below), whose sum is σ = 113848609056. Its totient is φ = 47436920400.

The previous prime is 78270918641. The next prime is 78270918697. The reversal of 78270918693 is 39681907287.

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

It is not a de Polignac number, because 78270918693 - 2³² = 73975951397 is a prime.

It is a super-2 number, since 2×78270918693² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78270918697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185922978 + ... + 1185923043.

It is an arithmetic number, because the mean of its divisors is an integer number (14231076132).

Almost surely, 2^78270918693 is an apocalyptic number.

It is an amenable number.

78270918693 is a deficient number, since it is larger than the sum of its proper divisors (35577690363).

78270918693 is a wasteful number, since it uses less digits than its factorization.

78270918693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371846035.

The product of its (nonzero) digits is 9144576, while the sum is 60.

The spelling of 78270918693 in words is "seventy-eight billion, two hundred seventy million, nine hundred eighteen thousand, six hundred ninety-three".