39995260812 has 180 divisors, whose sum is σ = 115633226016. Its totient is φ = 12043624320.

The previous prime is 39995260807. The next prime is 39995260829. The reversal of 39995260812 is 21806259993.

It is a happy number.

39995260812 is a `hidden beast` number, since 39 + 9 + 9 + 526 + 0 + 81 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2565762 + ... + 2581302.

Almost surely, 2^39995260812 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 39995260812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57816613008).

39995260812 is an abundant number, since it is smaller than the sum of its proper divisors (75637965204).

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

39995260812 is a wasteful number, since it uses less digits than its factorization.

39995260812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15630 (or 15606 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The spelling of 39995260812 in words is "thirty-nine billion, nine hundred ninety-five million, two hundred sixty thousand, eight hundred twelve".