45444376621 has 16 divisors (see below), whose sum is σ = 52248637440. Its totient is φ = 38718353520.

The previous prime is 45444376613. The next prime is 45444376661. The reversal of 45444376621 is 12667344454.

It is not a de Polignac number, because 45444376621 - 2³ = 45444376613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45444376661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3661336 + ... + 3673726.

It is an arithmetic number, because the mean of its divisors is an integer number (3265539840).

Almost surely, 2^45444376621 is an apocalyptic number.

It is an amenable number.

45444376621 is a deficient number, since it is larger than the sum of its proper divisors (6804260819).

45444376621 is a wasteful number, since it uses less digits than its factorization.

45444376621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15504.

The product of its digits is 1935360, while the sum is 46.

The spelling of 45444376621 in words is "forty-five billion, four hundred forty-four million, three hundred seventy-six thousand, six hundred twenty-one".