64026266840 has 32 divisors (see below), whose sum is σ = 144183073680. Its totient is φ = 25588467072.

The previous prime is 64026266833. The next prime is 64026266917. The reversal of 64026266840 is 4866262046.

It is a junction number, because it is equal to n+sod(n) for n = 64026266791 and 64026266800.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 641639 + ... + 734678.

Almost surely, 2^64026266840 is an apocalyptic number.

It is an amenable number.

64026266840 is an abundant number, since it is smaller than the sum of its proper divisors (80156806840).

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

64026266840 is a wasteful number, since it uses less digits than its factorization.

64026266840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377491 (or 1377487 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 44.

The spelling of 64026266840 in words is "sixty-four billion, twenty-six million, two hundred sixty-six thousand, eight hundred forty".