74098828521 has 27 divisors (see below), whose sum is σ = 110633447613. Its totient is φ = 47789363160.

The previous prime is 74098828513. The next prime is 74098828543. The reversal of 74098828521 is 12582889047.

The square root of 74098828521 is 272211.

It is a perfect power (a square), and thus also a powerful number.

74098828521 is a `hidden beast` number, since 7 + 4 + 0 + 98 + 8 + 28 + 521 = 666.

It is not a de Polignac number, because 74098828521 - 2³ = 74098828513 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (74098828021) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 25314160 + ... + 25317086.

Almost surely, 2^74098828521 is an apocalyptic number.

74098828521 is the 272211-st square number.

74098828521 is the 136106-th centered octagonal number.

It is an amenable number.

74098828521 is a deficient number, since it is larger than the sum of its proper divisors (36534619092).

74098828521 is an frugal number, since it uses more digits than its factorization.

74098828521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922 (or 2961 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 74098828521 in words is "seventy-four billion, ninety-eight million, eight hundred twenty-eight thousand, five hundred twenty-one".