39999960000 has 2240 divisors, whose sum is σ = 202627138560. Its totient is φ = 7464960000.

The previous prime is 39999959999. The next prime is 39999960019. The reversal of 39999960000 is 6999993.

It is a tau number, because it is divible by the number of its divisors (2240).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 1081079982 + ... + 1081080018.

It is an arithmetic number, because the mean of its divisors is an integer number (90458544).

Almost surely, 2^39999960000 is an apocalyptic number.

39999960000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39999960000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101313569280).

39999960000 is an abundant number, since it is smaller than the sum of its proper divisors (162627178560).

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

39999960000 is a wasteful number, since it uses less digits than its factorization.

39999960000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 1062882, while the sum is 54.

It can be divided in two parts, 39999 and 960000, that added together give a palindrome (999999).

The spelling of 39999960000 in words is "thirty-nine billion, nine hundred ninety-nine million, nine hundred sixty thousand".