78276994874 has 16 divisors (see below), whose sum is σ = 126917529480. Its totient is φ = 35993536320.

The previous prime is 78276994871. The next prime is 78276994879. The reversal of 78276994874 is 47849967287.

It can be written as a sum of positive squares in 4 ways, for example, as 8498074225 + 69778920649 = 92185^2 + 264157^2 .

It is a super-2 number, since 2×78276994874² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78276994798 and 78276994807.

It is not an unprimeable number, because it can be changed into a prime (78276994871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5589017 + ... + 5603004.

Almost surely, 2^78276994874 is an apocalyptic number.

78276994874 is a deficient number, since it is larger than the sum of its proper divisors (48640534606).

78276994874 is a wasteful number, since it uses less digits than its factorization.

78276994874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11192305.

The product of its digits is 341397504, while the sum is 71.

The spelling of 78276994874 in words is "seventy-eight billion, two hundred seventy-six million, nine hundred ninety-four thousand, eight hundred seventy-four".