61118011 has 2 divisors, whose sum is σ = 61118012. Its totient is φ = 61118010.

The previous prime is 61117999. The next prime is 61118017. The reversal of 61118011 is 11081116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61118011 - 2¹³ = 61109819 is a prime.

It is a super-2 number, since 2×61118011² = 7470822537192242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61118011.

It is not a weakly prime, because it can be changed into another prime (61118017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30559005 + 30559006.

It is an arithmetic number, because the mean of its divisors is an integer number (30559006).

Almost surely, 2^61118011 is an apocalyptic number.

61118011 is a deficient number, since it is larger than the sum of its proper divisors (1).

61118011 is an equidigital number, since it uses as much as digits as its factorization.

61118011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

The square root of 61118011 is about 7817.8009056256. The cubic root of 61118011 is about 393.9034072265.

Adding to 61118011 its reverse (11081116), we get a palindrome (72199127).

The spelling of 61118011 in words is "sixty-one million, one hundred eighteen thousand, eleven".