64229339731 has 2 divisors, whose sum is σ = 64229339732. Its totient is φ = 64229339730.

The previous prime is 64229339729. The next prime is 64229339767. The reversal of 64229339731 is 13793392246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64229339731 - 2¹ = 64229339729 is a prime.

It is a super-2 number, since 2×64229339731² (a number of 22 digits) contains 22 as substring.

Together with 64229339729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64229339771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32114669865 + 32114669866.

It is an arithmetic number, because the mean of its divisors is an integer number (32114669866).

Almost surely, 2^64229339731 is an apocalyptic number.

64229339731 is a deficient number, since it is larger than the sum of its proper divisors (1).

64229339731 is an equidigital number, since it uses as much as digits as its factorization.

64229339731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 49.

The spelling of 64229339731 in words is "sixty-four billion, two hundred twenty-nine million, three hundred thirty-nine thousand, seven hundred thirty-one".