39965134032 has 120 divisors (see below), whose sum is σ = 115574571008. Its totient is φ = 12878611200.

The previous prime is 39965134031. The next prime is 39965134061. The reversal of 39965134032 is 23043156993.

39965134032 is a `hidden beast` number, since 3 + 9 + 96 + 513 + 40 + 3 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39965134031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4875057 + ... + 4883247.

Almost surely, 2^39965134032 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 39965134032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57787285504).

39965134032 is an abundant number, since it is smaller than the sum of its proper divisors (75609436976).

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

39965134032 is a wasteful number, since it uses less digits than its factorization.

39965134032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9329 (or 9320 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The spelling of 39965134032 in words is "thirty-nine billion, nine hundred sixty-five million, one hundred thirty-four thousand, thirty-two".