64423133255056 has 40 divisors (see below), whose sum is σ = 125255119599000. Its totient is φ = 32099390668800.

The previous prime is 64423133254979. The next prime is 64423133255081. The reversal of 64423133255056 is 65055233132446.

It can be written as a sum of positive squares in 4 ways, for example, as 11603669965056 + 52819463290000 = 3406416^2 + 7267700^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498020 + ... + 11449468.

It is an arithmetic number, because the mean of its divisors is an integer number (3131377989975).

Almost surely, 2^{64423133255056} is an apocalyptic number.

It is an amenable number.

64423133255056 is a deficient number, since it is larger than the sum of its proper divisors (60831986343944).

64423133255056 is a wasteful number, since it uses less digits than its factorization.

64423133255056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9952867 (or 9952861 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 49.

The spelling of 64423133255056 in words is "sixty-four trillion, four hundred twenty-three billion, one hundred thirty-three million, two hundred fifty-five thousand, fifty-six".