44471972666 has 32 divisors (see below), whose sum is σ = 73140883200. Its totient is φ = 20112281280.

The previous prime is 44471972663. The next prime is 44471972669. The reversal of 44471972666 is 66627917444.

It is an interprime number because it is at equal distance from previous prime (44471972663) and next prime (44471972669).

It is a super-2 number, since 2×44471972666² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44471972663) 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, 11630831 + ... + 11634653.

It is an arithmetic number, because the mean of its divisors is an integer number (2285652600).

Almost surely, 2^44471972666 is an apocalyptic number.

44471972666 is a deficient number, since it is larger than the sum of its proper divisors (28668910534).

44471972666 is a wasteful number, since it uses less digits than its factorization.

44471972666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6374.

The product of its digits is 12192768, while the sum is 56.

The spelling of 44471972666 in words is "forty-four billion, four hundred seventy-one million, nine hundred seventy-two thousand, six hundred sixty-six".