51110044561447 has 2 divisors, whose sum is σ = 51110044561448. Its totient is φ = 51110044561446.

The previous prime is 51110044561417. The next prime is 51110044561571. The reversal of 51110044561447 is 74416544001115.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51110044561447 - 2⁷ = 51110044561319 is a prime.

It is a super-2 number, since 2×51110044561447² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51110044561417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555022280723 + 25555022280724.

It is an arithmetic number, because the mean of its divisors is an integer number (25555022280724).

Almost surely, 2^{51110044561447} is an apocalyptic number.

51110044561447 is a deficient number, since it is larger than the sum of its proper divisors (1).

51110044561447 is an equidigital number, since it uses as much as digits as its factorization.

51110044561447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 51110044561447 in words is "fifty-one trillion, one hundred ten billion, forty-four million, five hundred sixty-one thousand, four hundred forty-seven".