61584087158 has 24 divisors (see below), whose sum is σ = 101601225936. Its totient is φ = 27975170960.

The previous prime is 61584087143. The next prime is 61584087181. The reversal of 61584087158 is 85178048516.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 309716 + ... + 468072.

It is an arithmetic number, because the mean of its divisors is an integer number (4233384414).

Almost surely, 2^61584087158 is an apocalyptic number.

61584087158 is a deficient number, since it is larger than the sum of its proper divisors (40017138778).

61584087158 is a wasteful number, since it uses less digits than its factorization.

61584087158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159988 (or 159977 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 53.

The spelling of 61584087158 in words is "sixty-one billion, five hundred eighty-four million, eighty-seven thousand, one hundred fifty-eight".