64123311027 has 4 divisors (see below), whose sum is σ = 85497748040. Its totient is φ = 42748874016.

The previous prime is 64123311019. The next prime is 64123311061. The reversal of 64123311027 is 72011332146.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64123311027 - 2³ = 64123311019 is a prime.

It is a super-2 number, since 2×64123311027² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64123310985 and 64123311003.

It is not an unprimeable number, because it can be changed into a prime (64123311017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10687218502 + ... + 10687218507.

It is an arithmetic number, because the mean of its divisors is an integer number (21374437010).

Almost surely, 2^64123311027 is an apocalyptic number.

64123311027 is a deficient number, since it is larger than the sum of its proper divisors (21374437013).

64123311027 is a wasteful number, since it uses less digits than its factorization.

64123311027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21374437012.

The product of its (nonzero) digits is 6048, while the sum is 30.

The spelling of 64123311027 in words is "sixty-four billion, one hundred twenty-three million, three hundred eleven thousand, twenty-seven".