74428334421 has 32 divisors (see below), whose sum is σ = 121165685760. Its totient is φ = 39690642816.

The previous prime is 74428334411. The next prime is 74428334473. The reversal of 74428334421 is 12443382447.

It is not a de Polignac number, because 74428334421 - 2¹⁷ = 74428203349 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74428334411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1365336 + ... + 1418801.

It is an arithmetic number, because the mean of its divisors is an integer number (3786427680).

Almost surely, 2^74428334421 is an apocalyptic number.

It is an amenable number.

74428334421 is a deficient number, since it is larger than the sum of its proper divisors (46737351339).

74428334421 is a wasteful number, since it uses less digits than its factorization.

74428334421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784233.

The product of its digits is 516096, while the sum is 42.

The spelling of 74428334421 in words is "seventy-four billion, four hundred twenty-eight million, three hundred thirty-four thousand, four hundred twenty-one".