78626782567072 has 12 divisors (see below), whose sum is σ = 154796478178986. Its totient is φ = 39313391283520.

The previous prime is 78626782567027. The next prime is 78626782567139. The reversal of 78626782567072 is 27076528762687.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44519267020176 + 34107515546896 = 6672276^2 + 5840164^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78626782566986 and 78626782567004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1228543477579 + ... + 1228543477642.

Almost surely, 2^{78626782567072} is an apocalyptic number.

It is an amenable number.

78626782567072 is a deficient number, since it is larger than the sum of its proper divisors (76169695611914).

78626782567072 is a wasteful number, since it uses less digits than its factorization.

78626782567072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457086955231 (or 2457086955223 counting only the distinct ones).

The product of its (nonzero) digits is 1327656960, while the sum is 73.

The spelling of 78626782567072 in words is "seventy-eight trillion, six hundred twenty-six billion, seven hundred eighty-two million, five hundred sixty-seven thousand, seventy-two".