9974807436528 has 160 divisors (see below), whose sum is σ = 31238013139200. Its totient is φ = 3022304313600.

The previous prime is 9974807436497. The next prime is 9974807436533. The reversal of 9974807436528 is 8256347084799.

9974807436528 is a `hidden beast` number, since 9 + 97 + 4 + 8 + 0 + 7 + 4 + 3 + 6 + 528 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40654603 + ... + 40899221.

It is an arithmetic number, because the mean of its divisors is an integer number (195237582120).

Almost surely, 2^{9974807436528} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9974807436528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15619006569600).

9974807436528 is an abundant number, since it is smaller than the sum of its proper divisors (21263205702672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9974807436528 is a wasteful number, since it uses less digits than its factorization.

9974807436528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253228 (or 253216 counting only the distinct ones).

The product of its (nonzero) digits is 731566080, while the sum is 72.

The spelling of 9974807436528 in words is "nine trillion, nine hundred seventy-four billion, eight hundred seven million, four hundred thirty-six thousand, five hundred twenty-eight".