74574528861 has 32 divisors (see below), whose sum is σ = 114432640000. Its totient is φ = 42316245504.

The previous prime is 74574528851. The next prime is 74574528863. The reversal of 74574528861 is 16882547547.

It is not a de Polignac number, because 74574528861 - 2⁷ = 74574528733 is a prime.

It is a super-2 number, since 2×74574528861² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74574528863) 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, 4266606 + ... + 4284048.

It is an arithmetic number, because the mean of its divisors is an integer number (3576020000).

Almost surely, 2^74574528861 is an apocalyptic number.

It is an amenable number.

74574528861 is a deficient number, since it is larger than the sum of its proper divisors (39858111139).

74574528861 is a wasteful number, since it uses less digits than its factorization.

74574528861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18865.

The product of its digits is 15052800, while the sum is 57.

The spelling of 74574528861 in words is "seventy-four billion, five hundred seventy-four million, five hundred twenty-eight thousand, eight hundred sixty-one".