61011612715 has 16 divisors (see below), whose sum is σ = 79411389120. Its totient is φ = 44817710080.

The previous prime is 61011612707. The next prime is 61011612721. The reversal of 61011612715 is 51721611016.

It is not a de Polignac number, because 61011612715 - 2³ = 61011612707 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8749975 + ... + 8756944.

It is an arithmetic number, because the mean of its divisors is an integer number (4963211820).

Almost surely, 2^61011612715 is an apocalyptic number.

61011612715 is a deficient number, since it is larger than the sum of its proper divisors (18399776405).

61011612715 is a wasteful number, since it uses less digits than its factorization.

61011612715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17506982.

The product of its (nonzero) digits is 2520, while the sum is 31.

The spelling of 61011612715 in words is "sixty-one billion, eleven million, six hundred twelve thousand, seven hundred fifteen".