64123015250 has 32 divisors (see below), whose sum is σ = 137186614656. Its totient is φ = 21985033200.

The previous prime is 64123015249. The next prime is 64123015283. The reversal of 64123015250 is 5251032146.

It is a super-2 number, since 2×64123015250² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18319112 + ... + 18322611.

It is an arithmetic number, because the mean of its divisors is an integer number (4287081708).

Almost surely, 2^64123015250 is an apocalyptic number.

64123015250 is an abundant number, since it is smaller than the sum of its proper divisors (73063599406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64123015250 is a wasteful number, since it uses less digits than its factorization.

64123015250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36641747 (or 36641737 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 64123015250 its reverse (5251032146), we get a palindrome (69374047396).

The spelling of 64123015250 in words is "sixty-four billion, one hundred twenty-three million, fifteen thousand, two hundred fifty".