61106821075 has 12 divisors (see below), whose sum is σ = 75800492208. Its totient is φ = 48867370400.

The previous prime is 61106821067. The next prime is 61106821141. The reversal of 61106821075 is 57012860116.

It is not a de Polignac number, because 61106821075 - 2³ = 61106821067 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 383032 + ... + 518581.

It is an arithmetic number, because the mean of its divisors is an integer number (6316707684).

Almost surely, 2^61106821075 is an apocalyptic number.

61106821075 is a deficient number, since it is larger than the sum of its proper divisors (14693671133).

61106821075 is a wasteful number, since it uses less digits than its factorization.

61106821075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904334 (or 904329 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 61106821075 in words is "sixty-one billion, one hundred six million, eight hundred twenty-one thousand, seventy-five".