64444443603150 has 96 divisors (see below), whose sum is σ = 172737596773728. Its totient is φ = 15805979481600.

The previous prime is 64444443603139. The next prime is 64444443603157. The reversal of 64444443603150 is 5130634444446.

It is a super-2 number, since 2×64444443603150² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64444443603150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64444443603157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59114061 + ... + 60194360.

It is an arithmetic number, because the mean of its divisors is an integer number (1799349966393).

Almost surely, 2^{64444443603150} is an apocalyptic number.

64444443603150 is an abundant number, since it is smaller than the sum of its proper divisors (108293153170578).

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

64444443603150 is a wasteful number, since it uses less digits than its factorization.

64444443603150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119308726 (or 119308721 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 48.

The spelling of 64444443603150 in words is "sixty-four trillion, four hundred forty-four billion, four hundred forty-three million, six hundred three thousand, one hundred fifty".