78571336617040 has 160 divisors (see below), whose sum is σ = 199603775255040. Its totient is φ = 28663182028800.

The previous prime is 78571336617019. The next prime is 78571336617143. The reversal of 78571336617040 is 4071663317587.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4657101 + ... + 13372780.

It is an arithmetic number, because the mean of its divisors is an integer number (1247523595344).

Almost surely, 2^{78571336617040} is an apocalyptic number.

It is an amenable number.

78571336617040 is an abundant number, since it is smaller than the sum of its proper divisors (121032438638000).

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

78571336617040 is a wasteful number, since it uses less digits than its factorization.

78571336617040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18030021 (or 18030015 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 58.

The spelling of 78571336617040 in words is "seventy-eight trillion, five hundred seventy-one billion, three hundred thirty-six million, six hundred seventeen thousand, forty".