78533188748873 has 16 divisors (see below), whose sum is σ = 83337309757440. Its totient is φ = 73749709149696.

The previous prime is 78533188748869. The next prime is 78533188748881. The reversal of 78533188748873 is 37884788133587.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78533188748873 - 2² = 78533188748869 is a prime.

It is a super-2 number, since 2×78533188748873² (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 (78533188741873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15918488 + ... + 20259926.

It is an arithmetic number, because the mean of its divisors is an integer number (5208581859840).

Almost surely, 2^{78533188748873} is an apocalyptic number.

It is an amenable number.

78533188748873 is a deficient number, since it is larger than the sum of its proper divisors (4804121008567).

78533188748873 is a wasteful number, since it uses less digits than its factorization.

78533188748873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4343816.

The product of its digits is 6069288960, while the sum is 80.

The spelling of 78533188748873 in words is "seventy-eight trillion, five hundred thirty-three billion, one hundred eighty-eight million, seven hundred forty-eight thousand, eight hundred seventy-three".