78144947511093 has 24 divisors (see below), whose sum is σ = 113112743103360. Its totient is φ = 51987404453280.

The previous prime is 78144947511047. The next prime is 78144947511097. The reversal of 78144947511093 is 39011574944187.

It is a happy number.

78144947511093 is a `hidden beast` number, since 7 + 8 + 1 + 4 + 49 + 475 + 110 + 9 + 3 = 666.

It is not a de Polignac number, because 78144947511093 - 2³⁸ = 77870069604149 is a prime.

It is a super-2 number, since 2×78144947511093² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78144947511093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78144947511097) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40890763 + ... + 42759143.

It is an arithmetic number, because the mean of its divisors is an integer number (4713030962640).

Almost surely, 2^{78144947511093} is an apocalyptic number.

It is an amenable number.

78144947511093 is a deficient number, since it is larger than the sum of its proper divisors (34967795592267).

78144947511093 is a wasteful number, since it uses less digits than its factorization.

78144947511093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878129 (or 1878126 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 78144947511093 in words is "seventy-eight trillion, one hundred forty-four billion, nine hundred forty-seven million, five hundred eleven thousand, ninety-three".