78845307761896 has 32 divisors (see below), whose sum is σ = 159433985529000. Its totient is φ = 36338230252800.

The previous prime is 78845307761851. The next prime is 78845307761903. The reversal of 78845307761896 is 69816770354887.

It can be written as a sum of positive squares in 4 ways, for example, as 58155418440900 + 20689889320996 = 7625970^2 + 4548614^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540674571 + ... + 540820378.

Almost surely, 2^{78845307761896} is an apocalyptic number.

It is an amenable number.

78845307761896 is an abundant number, since it is smaller than the sum of its proper divisors (80588677767104).

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

78845307761896 is a wasteful number, since it uses less digits than its factorization.

78845307761896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081495669 (or 1081495665 counting only the distinct ones).

The product of its (nonzero) digits is 3413975040, while the sum is 79.

The spelling of 78845307761896 in words is "seventy-eight trillion, eight hundred forty-five billion, three hundred seven million, seven hundred sixty-one thousand, eight hundred ninety-six".