9920671524 has 36 divisors (see below), whose sum is σ = 25169813760. Its totient is φ = 3294684720.

The previous prime is 9920671469. The next prime is 9920671549. The reversal of 9920671524 is 4251760299.

9920671524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 9920671524.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 498684 + ... + 518195.

Almost surely, 2^9920671524 is an apocalyptic number.

It is an amenable number.

9920671524 is an abundant number, since it is smaller than the sum of its proper divisors (15249142236).

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

9920671524 is a wasteful number, since it uses less digits than its factorization.

9920671524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017160 (or 1017155 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 9920671524 is about 99602.5678584644. The cubic root of 9920671524 is about 2148.7226249651.

The spelling of 9920671524 in words is "nine billion, nine hundred twenty million, six hundred seventy-one thousand, five hundred twenty-four".