51111100100041 has 2 divisors, whose sum is σ = 51111100100042. Its totient is φ = 51111100100040.

The previous prime is 51111100100009. The next prime is 51111100100111. The reversal of 51111100100041 is 14000100111115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37925631907641 + 13185468192400 = 6158379^2 + 3631180^2 .

It is a cyclic number.

It is not a de Polignac number, because 51111100100041 - 2⁵ = 51111100100009 is a prime.

It is a super-2 number, since 2×51111100100041² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51111100099988 and 51111100100024.

It is not a weakly prime, because it can be changed into another prime (51111110100041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555550050020 + 25555550050021.

It is an arithmetic number, because the mean of its divisors is an integer number (25555550050021).

Almost surely, 2^{51111100100041} is an apocalyptic number.

It is an amenable number.

51111100100041 is a deficient number, since it is larger than the sum of its proper divisors (1).

51111100100041 is an equidigital number, since it uses as much as digits as its factorization.

51111100100041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 16.

Adding to 51111100100041 its reverse (14000100111115), we get a palindrome (65111200211156).

The spelling of 51111100100041 in words is "fifty-one trillion, one hundred eleven billion, one hundred million, one hundred thousand, forty-one".