64444110536154 has 128 divisors (see below), whose sum is σ = 137359741317120. Its totient is φ = 20113221832704.

The previous prime is 64444110536123. The next prime is 64444110536167. The reversal of 64444110536154 is 45163501144446.

It is a super-2 number, since 2×64444110536154² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8605165242 + ... + 8605172730.

It is an arithmetic number, because the mean of its divisors is an integer number (1073122979040).

Almost surely, 2^{64444110536154} is an apocalyptic number.

64444110536154 is an abundant number, since it is smaller than the sum of its proper divisors (72915630780966).

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

64444110536154 is a wasteful number, since it uses less digits than its factorization.

64444110536154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13324.

The product of its (nonzero) digits is 2764800, while the sum is 48.

The spelling of 64444110536154 in words is "sixty-four trillion, four hundred forty-four billion, one hundred ten million, five hundred thirty-six thousand, one hundred fifty-four".