61075087887 has 32 divisors (see below), whose sum is σ = 91492277760. Its totient is φ = 35914216320.

The previous prime is 61075087867. The next prime is 61075087891. The reversal of 61075087887 is 78878057016.

It is not a de Polignac number, because 61075087887 - 2⁸ = 61075087631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61075087817) 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, 368673 + ... + 508005.

It is an arithmetic number, because the mean of its divisors is an integer number (2859133680).

Almost surely, 2^61075087887 is an apocalyptic number.

61075087887 is a deficient number, since it is larger than the sum of its proper divisors (30417189873).

61075087887 is a wasteful number, since it uses less digits than its factorization.

61075087887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139743.

The product of its (nonzero) digits is 5268480, while the sum is 57.

The spelling of 61075087887 in words is "sixty-one billion, seventy-five million, eighty-seven thousand, eight hundred eighty-seven".