78278788706352 has 80 divisors (see below), whose sum is σ = 219438013901568. Its totient is φ = 23901920190720.

The previous prime is 78278788706317. The next prime is 78278788706353. The reversal of 78278788706352 is 25360788787287.

It is a super-2 number, since 2×78278788706352² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is not an unprimeable number, because it can be changed into a prime (78278788706353) 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, 478722748 + ... + 478886235.

Almost surely, 2^{78278788706352} is an apocalyptic number.

It is an amenable number.

78278788706352 is an abundant number, since it is smaller than the sum of its proper divisors (141159225195216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78278788706352 is a wasteful number, since it uses less digits than its factorization.

78278788706352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957609138 (or 957609132 counting only the distinct ones).

The product of its (nonzero) digits is 3540418560, while the sum is 78.

The spelling of 78278788706352 in words is "seventy-eight trillion, two hundred seventy-eight billion, seven hundred eighty-eight million, seven hundred six thousand, three hundred fifty-two".