78787605785342 has 64 divisors (see below), whose sum is σ = 126603946183680. Its totient is φ = 36707248900224.

The previous prime is 78787605785341. The next prime is 78787605785359. The reversal of 78787605785342 is 24358750678787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78787605785341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118000028 + ... + 118665840.

It is an arithmetic number, because the mean of its divisors is an integer number (1978186659120).

Almost surely, 2^{78787605785342} is an apocalyptic number.

78787605785342 is a deficient number, since it is larger than the sum of its proper divisors (47816340398338).

78787605785342 is a wasteful number, since it uses less digits than its factorization.

78787605785342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666497.

The product of its (nonzero) digits is 4425523200, while the sum is 77.

The spelling of 78787605785342 in words is "seventy-eight trillion, seven hundred eighty-seven billion, six hundred five million, seven hundred eighty-five thousand, three hundred forty-two".