65938197542 has 16 divisors (see below), whose sum is σ = 117951558912. Its totient is φ = 27030565320.

The previous prime is 65938197529. The next prime is 65938197553. The reversal of 65938197542 is 24579183956.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102388184 + ... + 102388827.

It is an arithmetic number, because the mean of its divisors is an integer number (7371972432).

Almost surely, 2^65938197542 is an apocalyptic number.

65938197542 is a deficient number, since it is larger than the sum of its proper divisors (52013361370).

65938197542 is a wasteful number, since it uses less digits than its factorization.

65938197542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204777043.

The product of its digits is 16329600, while the sum is 59.

The spelling of 65938197542 in words is "sixty-five billion, nine hundred thirty-eight million, one hundred ninety-seven thousand, five hundred forty-two".