64126499536 has 20 divisors (see below), whose sum is σ = 135540101664. Its totient is φ = 29148408800.

The previous prime is 64126499533. The next prime is 64126499539. The reversal of 64126499536 is 63599462146.

It is an interprime number because it is at equal distance from previous prime (64126499533) and next prime (64126499539).

It is a super-2 number, since 2×64126499536² (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 (64126499531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182177380 + ... + 182177731.

Almost surely, 2^64126499536 is an apocalyptic number.

It is an amenable number.

64126499536 is an abundant number, since it is smaller than the sum of its proper divisors (71413602128).

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

64126499536 is a wasteful number, since it uses less digits than its factorization.

64126499536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364355130 (or 364355124 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 55.

The spelling of 64126499536 in words is "sixty-four billion, one hundred twenty-six million, four hundred ninety-nine thousand, five hundred thirty-six".