61075066515 has 32 divisors (see below), whose sum is σ = 103024051200. Its totient is φ = 30810746880.

The previous prime is 61075066511. The next prime is 61075066523. The reversal of 61075066515 is 51566057016.

It is not a de Polignac number, because 61075066515 - 2² = 61075066511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61075066511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15526 + ... + 349844.

It is an arithmetic number, because the mean of its divisors is an integer number (3219501600).

Almost surely, 2^61075066515 is an apocalyptic number.

61075066515 is a deficient number, since it is larger than the sum of its proper divisors (41948984685).

61075066515 is a wasteful number, since it uses less digits than its factorization.

61075066515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334987.

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 61075066515 in words is "sixty-one billion, seventy-five million, sixty-six thousand, five hundred fifteen".