44001661640471 has 2 divisors, whose sum is σ = 44001661640472. Its totient is φ = 44001661640470.

The previous prime is 44001661640459. The next prime is 44001661640473. The reversal of 44001661640471 is 17404616610044.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 44001661640471 - 2⁴² = 39603615129367 is a prime.

It is a super-3 number, since 3×44001661640471³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 44001661640473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44001661640473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22000830820235 + 22000830820236.

It is an arithmetic number, because the mean of its divisors is an integer number (22000830820236).

Almost surely, 2^{44001661640471} is an apocalyptic number.

44001661640471 is a deficient number, since it is larger than the sum of its proper divisors (1).

44001661640471 is an equidigital number, since it uses as much as digits as its factorization.

44001661640471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 44001661640471 in words is "forty-four trillion, one billion, six hundred sixty-one million, six hundred forty thousand, four hundred seventy-one".