78518941152 has 48 divisors (see below), whose sum is σ = 206279155152. Its totient is φ = 26151782400.

The previous prime is 78518941147. The next prime is 78518941153. The reversal of 78518941152 is 25114981587.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 78518941095 and 78518941104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78518941153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211849 + ... + 449352.

It is an arithmetic number, because the mean of its divisors is an integer number (4297482399).

Almost surely, 2^78518941152 is an apocalyptic number.

It is an amenable number.

78518941152 is an abundant number, since it is smaller than the sum of its proper divisors (127760214000).

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

78518941152 is a wasteful number, since it uses less digits than its factorization.

78518941152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662451 (or 662443 counting only the distinct ones).

The product of its digits is 806400, while the sum is 51.

The spelling of 78518941152 in words is "seventy-eight billion, five hundred eighteen million, nine hundred forty-one thousand, one hundred fifty-two".