78140376704 has 32 divisors (see below), whose sum is σ = 167644922340. Its totient is φ = 36064788480.

The previous prime is 78140376697. The next prime is 78140376719. The reversal of 78140376704 is 40767304187.

It can be written as a sum of positive squares in 2 ways, for example, as 76463310400 + 1677066304 = 276520^2 + 40952^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×78140376704² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23478017 + ... + 23481344.

Almost surely, 2^78140376704 is an apocalyptic number.

It is an amenable number.

78140376704 is an abundant number, since it is smaller than the sum of its proper divisors (89504545636).

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

78140376704 is a wasteful number, since it uses less digits than its factorization.

78140376704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46959388 (or 46959376 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 47.

The spelling of 78140376704 in words is "seventy-eight billion, one hundred forty million, three hundred seventy-six thousand, seven hundred four".