61151117115 has 32 divisors (see below), whose sum is σ = 109621276416. Its totient is φ = 28847698560.

The previous prime is 61151117081. The next prime is 61151117117. The reversal of 61151117115 is 51171115116.

It is not a de Polignac number, because 61151117115 - 2⁶ = 61151117051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61151117117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5002177 + ... + 5014386.

It is an arithmetic number, because the mean of its divisors is an integer number (3425664888).

Almost surely, 2^61151117115 is an apocalyptic number.

61151117115 is a deficient number, since it is larger than the sum of its proper divisors (48470159301).

61151117115 is a wasteful number, since it uses less digits than its factorization.

61151117115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10016619.

The product of its digits is 1050, while the sum is 30.

The spelling of 61151117115 in words is "sixty-one billion, one hundred fifty-one million, one hundred seventeen thousand, one hundred fifteen".