39661245000 has 800 divisors, whose sum is σ = 154951399680. Its totient is φ = 9447840000.

The previous prime is 39661244989. The next prime is 39661245079. The reversal of 39661245000 is 54216693.

It is a happy number.

39661245000 is a `hidden beast` number, since 3 + 96 + 61 + 2 + 4 + 500 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 1279394985 + ... + 1279395015.

Almost surely, 2^39661245000 is an apocalyptic number.

39661245000 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 39661245000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77475699840).

39661245000 is an abundant number, since it is smaller than the sum of its proper divisors (115290154680).

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

39661245000 is an frugal number, since it uses more digits than its factorization.

39661245000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 39661245000 in words is "thirty-nine billion, six hundred sixty-one million, two hundred forty-five thousand".