74199491655 has 16 divisors (see below), whose sum is σ = 118794410880. Its totient is φ = 39547987488.

The previous prime is 74199491599. The next prime is 74199491693. The reversal of 74199491655 is 55619499147.

It is not a de Polignac number, because 74199491655 - 2⁹ = 74199491143 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1542697 + ... + 1590066.

It is an arithmetic number, because the mean of its divisors is an integer number (7424650680).

Almost surely, 2^74199491655 is an apocalyptic number.

74199491655 is a deficient number, since it is larger than the sum of its proper divisors (44594919225).

74199491655 is a wasteful number, since it uses less digits than its factorization.

74199491655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134350.

The product of its digits is 12247200, while the sum is 60.

The spelling of 74199491655 in words is "seventy-four billion, one hundred ninety-nine million, four hundred ninety-one thousand, six hundred fifty-five".