74552621437 has 4 divisors (see below), whose sum is σ = 85202995936. Its totient is φ = 63902246940.

The previous prime is 74552621419. The next prime is 74552621441. The reversal of 74552621437 is 73412625547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 74552621437 - 2¹¹ = 74552619389 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 (74552631437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5325187239 + ... + 5325187252.

It is an arithmetic number, because the mean of its divisors is an integer number (21300748984).

Almost surely, 2^74552621437 is an apocalyptic number.

It is an amenable number.

74552621437 is a deficient number, since it is larger than the sum of its proper divisors (10650374499).

74552621437 is a wasteful number, since it uses less digits than its factorization.

74552621437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10650374498.

The product of its digits is 1411200, while the sum is 46.

The spelling of 74552621437 in words is "seventy-four billion, five hundred fifty-two million, six hundred twenty-one thousand, four hundred thirty-seven".