78616622752 has 12 divisors (see below), whose sum is σ = 154776476106. Its totient is φ = 39308311360.

The previous prime is 78616622737. The next prime is 78616622771. The reversal of 78616622752 is 25722661687.

It can be written as a sum of positive squares in only one way, i.e., 64778394256 + 13838228496 = 254516^2 + 117636^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78616622752.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1228384699 + ... + 1228384762.

Almost surely, 2^78616622752 is an apocalyptic number.

It is an amenable number.

78616622752 is a deficient number, since it is larger than the sum of its proper divisors (76159853354).

78616622752 is a wasteful number, since it uses less digits than its factorization.

78616622752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456769471 (or 2456769463 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 52.

The spelling of 78616622752 in words is "seventy-eight billion, six hundred sixteen million, six hundred twenty-two thousand, seven hundred fifty-two".