61115111053 has 4 divisors (see below), whose sum is σ = 61207850880. Its totient is φ = 61022371228.

The previous prime is 61115111051. The next prime is 61115111077. The reversal of 61115111053 is 35011151116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61115111053 - 2¹ = 61115111051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61115111051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46368925 + ... + 46370242.

It is an arithmetic number, because the mean of its divisors is an integer number (15301962720).

Almost surely, 2^61115111053 is an apocalyptic number.

It is an amenable number.

61115111053 is a deficient number, since it is larger than the sum of its proper divisors (92739827).

61115111053 is an equidigital number, since it uses as much as digits as its factorization.

61115111053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92739826.

The product of its (nonzero) digits is 450, while the sum is 25.

Adding to 61115111053 its reverse (35011151116), we get a palindrome (96126262169).

The spelling of 61115111053 in words is "sixty-one billion, one hundred fifteen million, one hundred eleven thousand, fifty-three".