65601193638438 has 12 divisors (see below), whose sum is σ = 142135919549988. Its totient is φ = 21867064546140.

The previous prime is 65601193638319. The next prime is 65601193638499. The reversal of 65601193638438 is 83483639110656.

65601193638438 is a `hidden beast` number, since 6 + 5 + 6 + 0 + 1 + 193 + 6 + 3 + 8 + 438 = 666.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1822255378828 + ... + 1822255378863.

It is an arithmetic number, because the mean of its divisors is an integer number (11844659962499).

Almost surely, 2^{65601193638438} is an apocalyptic number.

65601193638438 is an abundant number, since it is smaller than the sum of its proper divisors (76534725911550).

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

65601193638438 is a wasteful number, since it uses less digits than its factorization.

65601193638438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644510757699 (or 3644510757696 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 63.

The spelling of 65601193638438 in words is "sixty-five trillion, six hundred one billion, one hundred ninety-three million, six hundred thirty-eight thousand, four hundred thirty-eight".