74433087521 has 16 divisors (see below), whose sum is σ = 85896526464. Its totient is φ = 63886727424.

The previous prime is 74433087503. The next prime is 74433087523. The reversal of 74433087521 is 12578033447.

It is not a de Polignac number, because 74433087521 - 2²⁶ = 74365978657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74433087523) 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, 2010581 + ... + 2047266.

It is an arithmetic number, because the mean of its divisors is an integer number (5368532904).

Almost surely, 2^74433087521 is an apocalyptic number.

It is an amenable number.

74433087521 is a deficient number, since it is larger than the sum of its proper divisors (11463438943).

74433087521 is a wasteful number, since it uses less digits than its factorization.

74433087521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4057960.

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 74433087521 in words is "seventy-four billion, four hundred thirty-three million, eighty-seven thousand, five hundred twenty-one".