39800640000 has 400 divisors, whose sum is σ = 144580344480. Its totient is φ = 9646080000.

The previous prime is 39800639971. The next prime is 39800640029. The reversal of 39800640000 is 4600893.

It is an interprime number because it is at equal distance from previous prime (39800639971) and next prime (39800640029).

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 39800640000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10558116 + ... + 10561884.

Almost surely, 2^39800640000 is an apocalyptic number.

39800640000 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 39800640000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72290172240).

39800640000 is an abundant number, since it is smaller than the sum of its proper divisors (104779704480).

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

39800640000 is an equidigital number, since it uses as much as digits as its factorization.

39800640000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821 (or 3790 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 39800640000 in words is "thirty-nine billion, eight hundred million, six hundred forty thousand".