74198806555 has 8 divisors (see below), whose sum is σ = 93724808400. Its totient is φ = 56234884896.

The previous prime is 74198806547. The next prime is 74198806597. The reversal of 74198806555 is 55560889147.

It is a happy number.

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

It is not a de Polignac number, because 74198806555 - 2³ = 74198806547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74198806555.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390519940 + ... + 390520129.

It is an arithmetic number, because the mean of its divisors is an integer number (11715601050).

Almost surely, 2^74198806555 is an apocalyptic number.

74198806555 is a deficient number, since it is larger than the sum of its proper divisors (19526001845).

74198806555 is a wasteful number, since it uses less digits than its factorization.

74198806555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781040093.

The product of its (nonzero) digits is 12096000, while the sum is 58.

The spelling of 74198806555 in words is "seventy-four billion, one hundred ninety-eight million, eight hundred six thousand, five hundred fifty-five".