74428536479 has 16 divisors (see below), whose sum is σ = 83410943616. Its totient is φ = 65816445600.

The previous prime is 74428536443. The next prime is 74428536487. The reversal of 74428536479 is 97463582447.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 74428536479 - 2¹⁶ = 74428470943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74428536079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1692164 + ... + 1735590.

It is an arithmetic number, because the mean of its divisors is an integer number (5213183976).

Almost surely, 2^74428536479 is an apocalyptic number.

74428536479 is a deficient number, since it is larger than the sum of its proper divisors (8982407137).

74428536479 is a wasteful number, since it uses less digits than its factorization.

74428536479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47686.

The product of its digits is 40642560, while the sum is 59.

The spelling of 74428536479 in words is "seventy-four billion, four hundred twenty-eight million, five hundred thirty-six thousand, four hundred seventy-nine".