65138481238246 has 32 divisors (see below), whose sum is σ = 108623535971328. Its totient is φ = 29092631461920.

The previous prime is 65138481238139. The next prime is 65138481238261. The reversal of 65138481238246 is 64283218483156.

It is a super-2 number, since 2×65138481238246² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13884325 + ... + 17973631.

It is an arithmetic number, because the mean of its divisors is an integer number (3394485499104).

Almost surely, 2^{65138481238246} is an apocalyptic number.

65138481238246 is a deficient number, since it is larger than the sum of its proper divisors (43485054733082).

65138481238246 is a wasteful number, since it uses less digits than its factorization.

65138481238246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109116.

The product of its digits is 53084160, while the sum is 61.

The spelling of 65138481238246 in words is "sixty-five trillion, one hundred thirty-eight billion, four hundred eighty-one million, two hundred thirty-eight thousand, two hundred forty-six".