64123941445 has 16 divisors (see below), whose sum is σ = 77076720000. Its totient is φ = 51213907008.

The previous prime is 64123941443. The next prime is 64123941457. The reversal of 64123941445 is 54414932146.

It is a cyclic number.

It is not a de Polignac number, because 64123941445 - 2¹ = 64123941443 is a prime.

It is a super-2 number, since 2×64123941445² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64123941443) 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 15 ways as a sum of consecutive naturals, for example, 8593126 + ... + 8600584.

It is an arithmetic number, because the mean of its divisors is an integer number (4817295000).

Almost surely, 2^64123941445 is an apocalyptic number.

It is an amenable number.

64123941445 is a deficient number, since it is larger than the sum of its proper divisors (12952778555).

64123941445 is a wasteful number, since it uses less digits than its factorization.

64123941445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10092.

The product of its digits is 414720, while the sum is 43.

The spelling of 64123941445 in words is "sixty-four billion, one hundred twenty-three million, nine hundred forty-one thousand, four hundred forty-five".