44145552331 has 2 divisors, whose sum is σ = 44145552332. Its totient is φ = 44145552330.

The previous prime is 44145552323. The next prime is 44145552421. The reversal of 44145552331 is 13325554144.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44145552331 - 2³ = 44145552323 is a prime.

It is a super-2 number, since 2×44145552331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44145552131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22072776165 + 22072776166.

It is an arithmetic number, because the mean of its divisors is an integer number (22072776166).

Almost surely, 2^44145552331 is an apocalyptic number.

44145552331 is a deficient number, since it is larger than the sum of its proper divisors (1).

44145552331 is an equidigital number, since it uses as much as digits as its factorization.

44145552331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 37.

The spelling of 44145552331 in words is "forty-four billion, one hundred forty-five million, five hundred fifty-two thousand, three hundred thirty-one".