61110000555001 has 2 divisors, whose sum is σ = 61110000555002. Its totient is φ = 61110000555000.

The previous prime is 61110000554971. The next prime is 61110000555031. The reversal of 61110000555001 is 10055500001116.

It is a balanced prime because it is at equal distance from previous prime (61110000554971) and next prime (61110000555031).

It can be written as a sum of positive squares in only one way, i.e., 56666252234601 + 4443748320400 = 7527699^2 + 2108020^2 .

It is a cyclic number.

It is not a de Polignac number, because 61110000555001 - 2⁷ = 61110000554873 is a prime.

It is a super-2 number, since 2×61110000555001² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61110000555031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30555000277500 + 30555000277501.

It is an arithmetic number, because the mean of its divisors is an integer number (30555000277501).

Almost surely, 2^{61110000555001} is an apocalyptic number.

It is an amenable number.

61110000555001 is a deficient number, since it is larger than the sum of its proper divisors (1).

61110000555001 is an equidigital number, since it uses as much as digits as its factorization.

61110000555001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 25.

Adding to 61110000555001 its reverse (10055500001116), we get a palindrome (71165500556117).

The spelling of 61110000555001 in words is "sixty-one trillion, one hundred ten billion, five hundred fifty-five thousand, one".