74556554555 has 24 divisors (see below), whose sum is σ = 105087231648. Its totient is φ = 49742719488.

The previous prime is 74556554531. The next prime is 74556554573. The reversal of 74556554555 is 55545565547.

It is not a de Polignac number, because 74556554555 - 2⁸ = 74556554299 is a prime.

It is a super-2 number, since 2×74556554555² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74556554555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 730094 + ... + 825923.

It is an arithmetic number, because the mean of its divisors is an integer number (4378634652).

Almost surely, 2^74556554555 is an apocalyptic number.

74556554555 is a deficient number, since it is larger than the sum of its proper divisors (30530677093).

74556554555 is a wasteful number, since it uses less digits than its factorization.

74556554555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556103 (or 1556066 counting only the distinct ones).

The product of its digits is 52500000, while the sum is 56.

The spelling of 74556554555 in words is "seventy-four billion, five hundred fifty-six million, five hundred fifty-four thousand, five hundred fifty-five".