61210135411 has 2 divisors, whose sum is σ = 61210135412. Its totient is φ = 61210135410.

The previous prime is 61210135409. The next prime is 61210135477. The reversal of 61210135411 is 11453101216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61210135411 - 2¹ = 61210135409 is a prime.

It is a super-2 number, since 2×61210135411² (a number of 22 digits) contains 22 as substring.

Together with 61210135409, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61210135211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30605067705 + 30605067706.

It is an arithmetic number, because the mean of its divisors is an integer number (30605067706).

Almost surely, 2^61210135411 is an apocalyptic number.

61210135411 is a deficient number, since it is larger than the sum of its proper divisors (1).

61210135411 is an equidigital number, since it uses as much as digits as its factorization.

61210135411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 61210135411 its reverse (11453101216), we get a palindrome (72663236627).

The spelling of 61210135411 in words is "sixty-one billion, two hundred ten million, one hundred thirty-five thousand, four hundred eleven".