61558466123 has 24 divisors (see below), whose sum is σ = 80024084784. Its totient is φ = 46797676800.

The previous prime is 61558466117. The next prime is 61558466143. The reversal of 61558466123 is 32166485516.

It is not a de Polignac number, because 61558466123 - 2¹² = 61558462027 is a prime.

It is a super-3 number, since 3×61558466123³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (61558466113) 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 23 ways as a sum of consecutive naturals, for example, 1370690 + ... + 1414887.

It is an arithmetic number, because the mean of its divisors is an integer number (3334336866).

Almost surely, 2^61558466123 is an apocalyptic number.

61558466123 is a deficient number, since it is larger than the sum of its proper divisors (18465618661).

61558466123 is a wasteful number, since it uses less digits than its factorization.

61558466123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785643 (or 2785636 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 47.

The spelling of 61558466123 in words is "sixty-one billion, five hundred fifty-eight million, four hundred sixty-six thousand, one hundred twenty-three".