44551222664 has 32 divisors (see below), whose sum is σ = 90131975640. Its totient is φ = 20522611200.

The previous prime is 44551222649. The next prime is 44551222673. The reversal of 44551222664 is 46622215544.

It can be written as a sum of positive squares in 4 ways, for example, as 11229640900 + 33321581764 = 105970^2 + 182542^2 .

It is a super-2 number, since 2×44551222664² (a number of 22 digits) contains 22 as substring.

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, 356927 + ... + 465294.

Almost surely, 2^44551222664 is an apocalyptic number.

It is an amenable number.

44551222664 is an abundant number, since it is smaller than the sum of its proper divisors (45580752976).

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

44551222664 is a wasteful number, since it uses less digits than its factorization.

44551222664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822761 (or 822757 counting only the distinct ones).

The product of its digits is 460800, while the sum is 41.

The spelling of 44551222664 in words is "forty-four billion, five hundred fifty-one million, two hundred twenty-two thousand, six hundred sixty-four".