74578720255 has 8 divisors (see below), whose sum is σ = 96378653952. Its totient is φ = 55073516448.

The previous prime is 74578720253. The next prime is 74578720259. The reversal of 74578720255 is 55202787547.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74578720255 - 2¹ = 74578720253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74578720253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573682399 + ... + 573682528.

It is an arithmetic number, because the mean of its divisors is an integer number (12047331744).

Almost surely, 2^74578720255 is an apocalyptic number.

74578720255 is a deficient number, since it is larger than the sum of its proper divisors (21799933697).

74578720255 is a wasteful number, since it uses less digits than its factorization.

74578720255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147364945.

The product of its (nonzero) digits is 5488000, while the sum is 52.

The spelling of 74578720255 in words is "seventy-four billion, five hundred seventy-eight million, seven hundred twenty thousand, two hundred fifty-five".