65388130643931 has 16 divisors (see below), whose sum is σ = 90011762088960. Its totient is φ = 42178767996960.

The previous prime is 65388130643909. The next prime is 65388130643977. The reversal of 65388130643931 is 13934603188356.

It is not a de Polignac number, because 65388130643931 - 2⁹ = 65388130643419 is a prime.

It is a super-2 number, since 2×65388130643931² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65388130642931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58802376 + ... + 59904053.

It is an arithmetic number, because the mean of its divisors is an integer number (5625735130560).

Almost surely, 2^{65388130643931} is an apocalyptic number.

65388130643931 is a deficient number, since it is larger than the sum of its proper divisors (24623631445029).

65388130643931 is a wasteful number, since it uses less digits than its factorization.

65388130643931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118712386.

The product of its (nonzero) digits is 33592320, while the sum is 60.

The spelling of 65388130643931 in words is "sixty-five trillion, three hundred eighty-eight billion, one hundred thirty million, six hundred forty-three thousand, nine hundred thirty-one".