44215925881 has 2 divisors, whose sum is σ = 44215925882. Its totient is φ = 44215925880.

The previous prime is 44215925843. The next prime is 44215925899. The reversal of 44215925881 is 18852951244.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34230920256 + 9985005625 = 185016^2 + 99925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44215925881 is a prime.

It is a super-2 number, since 2×44215925881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44216925881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22107962940 + 22107962941.

It is an arithmetic number, because the mean of its divisors is an integer number (22107962941).

Almost surely, 2^44215925881 is an apocalyptic number.

It is an amenable number.

44215925881 is a deficient number, since it is larger than the sum of its proper divisors (1).

44215925881 is an equidigital number, since it uses as much as digits as its factorization.

44215925881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 921600, while the sum is 49.

The spelling of 44215925881 in words is "forty-four billion, two hundred fifteen million, nine hundred twenty-five thousand, eight hundred eighty-one".