74727618549 has 8 divisors (see below), whose sum is σ = 99701910432. Its totient is φ = 49785869520.

The previous prime is 74727618527. The next prime is 74727618611. The reversal of 74727618549 is 94581672747.

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

It is not a de Polignac number, because 74727618549 - 2¹² = 74727614453 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 74727618492 and 74727618501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74727618149) 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, 8130354 + ... + 8139539.

It is an arithmetic number, because the mean of its divisors is an integer number (12462738804).

Almost surely, 2^74727618549 is an apocalyptic number.

It is an amenable number.

74727618549 is a deficient number, since it is larger than the sum of its proper divisors (24974291883).

74727618549 is a wasteful number, since it uses less digits than its factorization.

74727618549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16271427.

The product of its digits is 23708160, while the sum is 60.

The spelling of 74727618549 in words is "seventy-four billion, seven hundred twenty-seven million, six hundred eighteen thousand, five hundred forty-nine".