611621512441 has 2 divisors, whose sum is σ = 611621512442. Its totient is φ = 611621512440.

The previous prime is 611621512427. The next prime is 611621512487. The reversal of 611621512441 is 144215126116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 592661324025 + 18960188416 = 769845^2 + 137696^2 .

It is a cyclic number.

It is not a de Polignac number, because 611621512441 - 2³⁵ = 577261774073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 611621512397 and 611621512406.

It is not a weakly prime, because it can be changed into another prime (611621512421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305810756220 + 305810756221.

It is an arithmetic number, because the mean of its divisors is an integer number (305810756221).

Almost surely, 2^611621512441 is an apocalyptic number.

It is an amenable number.

611621512441 is a deficient number, since it is larger than the sum of its proper divisors (1).

611621512441 is an equidigital number, since it uses as much as digits as its factorization.

611621512441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 34.

Adding to 611621512441 its reverse (144215126116), we get a palindrome (755836638557).

The spelling of 611621512441 in words is "six hundred eleven billion, six hundred twenty-one million, five hundred twelve thousand, four hundred forty-one".