64242104431 has 2 divisors, whose sum is σ = 64242104432. Its totient is φ = 64242104430.

The previous prime is 64242104347. The next prime is 64242104453. The reversal of 64242104431 is 13440124246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64242104431 is a prime.

It is a super-2 number, since 2×64242104431² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64242104393 and 64242104402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64242104461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32121052215 + 32121052216.

It is an arithmetic number, because the mean of its divisors is an integer number (32121052216).

Almost surely, 2^64242104431 is an apocalyptic number.

64242104431 is a deficient number, since it is larger than the sum of its proper divisors (1).

64242104431 is an equidigital number, since it uses as much as digits as its factorization.

64242104431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 64242104431 its reverse (13440124246), we get a palindrome (77682228677).

The spelling of 64242104431 in words is "sixty-four billion, two hundred forty-two million, one hundred four thousand, four hundred thirty-one".