39990065472 has 560 divisors, whose sum is σ = 147287162880. Its totient is φ = 10469606400.

The previous prime is 39990065443. The next prime is 39990065513. The reversal of 39990065472 is 27456009993.

39990065472 is a `hidden beast` number, since 3 + 9 + 9 + 90 + 0 + 6 + 547 + 2 = 666.

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

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 21372697 + ... + 21374567.

Almost surely, 2^39990065472 is an apocalyptic number.

39990065472 is a gapful number since it is divisible by the number (32) 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 39990065472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73643581440).

39990065472 is an abundant number, since it is smaller than the sum of its proper divisors (107297097408).

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

39990065472 is a wasteful number, since it uses less digits than its factorization.

39990065472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1933 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The spelling of 39990065472 in words is "thirty-nine billion, nine hundred ninety million, sixty-five thousand, four hundred seventy-two".