64648126543 has 32 divisors (see below), whose sum is σ = 87182968320. Its totient is φ = 46295141760.

The previous prime is 64648126483. The next prime is 64648126577. The reversal of 64648126543 is 34562184646.

It is not a de Polignac number, because 64648126543 - 2¹³ = 64648118351 is a prime.

It is a super-2 number, since 2×64648126543² (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 (64648126043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84973 + ... + 369481.

It is an arithmetic number, because the mean of its divisors is an integer number (2724467760).

Almost surely, 2^64648126543 is an apocalyptic number.

64648126543 is a deficient number, since it is larger than the sum of its proper divisors (22534841777).

64648126543 is a wasteful number, since it uses less digits than its factorization.

64648126543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284767.

The product of its digits is 3317760, while the sum is 49.

It can be divided in two parts, 64648 and 126543, that added together give a palindrome (191191).

The spelling of 64648126543 in words is "sixty-four billion, six hundred forty-eight million, one hundred twenty-six thousand, five hundred forty-three".