39649184432 has 160 divisors (see below), whose sum is σ = 94793932800. Its totient is φ = 15808066560.

The previous prime is 39649184417. The next prime is 39649184437. The reversal of 39649184432 is 23448194693.

It is a super-2 number, since 2×39649184432² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39649184437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8259569 + ... + 8264367.

It is an arithmetic number, because the mean of its divisors is an integer number (592462080).

Almost surely, 2^39649184432 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 39649184432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47396966400).

39649184432 is an abundant number, since it is smaller than the sum of its proper divisors (55144748368).

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

39649184432 is a wasteful number, since it uses less digits than its factorization.

39649184432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5011 (or 5005 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 53.

The spelling of 39649184432 in words is "thirty-nine billion, six hundred forty-nine million, one hundred eighty-four thousand, four hundred thirty-two".