44521621064 has 8 divisors (see below), whose sum is σ = 83478039510. Its totient is φ = 22260810528.

The previous prime is 44521621057. The next prime is 44521621099. The reversal of 44521621064 is 46012612544.

It can be written as a sum of positive squares in only one way, i.e., 38164748164 + 6356872900 = 195358^2 + 79730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×44521621064³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2782601309 + ... + 2782601324.

Almost surely, 2^44521621064 is an apocalyptic number.

It is an amenable number.

44521621064 is a deficient number, since it is larger than the sum of its proper divisors (38956418446).

44521621064 is a wasteful number, since it uses less digits than its factorization.

44521621064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5565202639 (or 5565202635 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 44521621064 in words is "forty-four billion, five hundred twenty-one million, six hundred twenty-one thousand, sixty-four".