78282116757 has 12 divisors (see below), whose sum is σ = 121772181804. Its totient is φ = 48173610240.

The previous prime is 78282116741. The next prime is 78282116767. The reversal of 78282116757 is 75761128287.

It can be written as a sum of positive squares in 2 ways, for example, as 17060016996 + 61222099761 = 130614^2 + 247431^2 .

It is not a de Polignac number, because 78282116757 - 2⁴ = 78282116741 is a prime.

It is a super-2 number, since 2×78282116757² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78282116767) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 334538844 + ... + 334539077.

It is an arithmetic number, because the mean of its divisors is an integer number (10147681817).

Almost surely, 2^78282116757 is an apocalyptic number.

It is an amenable number.

78282116757 is a deficient number, since it is larger than the sum of its proper divisors (43490065047).

78282116757 is a wasteful number, since it uses less digits than its factorization.

78282116757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669077940 (or 669077937 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 54.

The spelling of 78282116757 in words is "seventy-eight billion, two hundred eighty-two million, one hundred sixteen thousand, seven hundred fifty-seven".