74012991553 has 4 divisors (see below), whose sum is σ = 74014514388. Its totient is φ = 74011468720.

The previous prime is 74012991431. The next prime is 74012991593. The reversal of 74012991553 is 35519921047.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17942066704 + 56070924849 = 133948^2 + 236793^2 .

It is a cyclic number.

It is not a de Polignac number, because 74012991553 - 2¹³ = 74012983361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74012991593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686026 + ... + 786547.

It is an arithmetic number, because the mean of its divisors is an integer number (18503628597).

Almost surely, 2^74012991553 is an apocalyptic number.

It is an amenable number.

74012991553 is a deficient number, since it is larger than the sum of its proper divisors (1522835).

74012991553 is a wasteful number, since it uses less digits than its factorization.

74012991553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522834.

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 74012991553 in words is "seventy-four billion, twelve million, nine hundred ninety-one thousand, five hundred fifty-three".