64426664600420 has 48 divisors (see below), whose sum is σ = 136647191576448. Its totient is φ = 25513809431040.

The previous prime is 64426664600411. The next prime is 64426664600449. The reversal of 64426664600420 is 2400646662446.

It is a super-2 number, since 2×64426664600420² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

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, 14064926 + ... + 18074165.

It is an arithmetic number, because the mean of its divisors is an integer number (2846816491176).

Almost surely, 2^{64426664600420} is an apocalyptic number.

It is an amenable number.

64426664600420 is an abundant number, since it is smaller than the sum of its proper divisors (72220526976028).

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

64426664600420 is a wasteful number, since it uses less digits than its factorization.

64426664600420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32140100 (or 32140098 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 50.

The spelling of 64426664600420 in words is "sixty-four trillion, four hundred twenty-six billion, six hundred sixty-four million, six hundred thousand, four hundred twenty".