44747477081 has 2 divisors, whose sum is σ = 44747477082. Its totient is φ = 44747477080.

The previous prime is 44747477041. The next prime is 44747477123. The reversal of 44747477081 is 18077474744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44455614025 + 291863056 = 210845^2 + 17084^2 .

It is a cyclic number.

It is not a de Polignac number, because 44747477081 - 2²² = 44743282777 is a prime.

It is a super-2 number, since 2×44747477081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44747477041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22373738540 + 22373738541.

It is an arithmetic number, because the mean of its divisors is an integer number (22373738541).

Almost surely, 2^44747477081 is an apocalyptic number.

It is an amenable number.

44747477081 is a deficient number, since it is larger than the sum of its proper divisors (1).

44747477081 is an equidigital number, since it uses as much as digits as its factorization.

44747477081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4917248, while the sum is 53.

The spelling of 44747477081 in words is "forty-four billion, seven hundred forty-seven million, four hundred seventy-seven thousand, eighty-one".