39995477760 has 216 divisors, whose sum is σ = 148591040976. Its totient is φ = 9141780480.

The previous prime is 39995477749. The next prime is 39995477773. The reversal of 39995477760 is 6777459993.

It is a junction number, because it is equal to n+sod(n) for n = 39995477691 and 39995477700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81880 + ... + 294440.

It is an arithmetic number, because the mean of its divisors is an integer number (687921486).

Almost surely, 2^39995477760 is an apocalyptic number.

39995477760 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 39995477760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74295520488).

39995477760 is an abundant number, since it is smaller than the sum of its proper divisors (108595563216).

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

39995477760 is a wasteful number, since it uses less digits than its factorization.

39995477760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212599 (or 212578 counting only the distinct ones).

The product of its (nonzero) digits is 90016920, while the sum is 66.

The spelling of 39995477760 in words is "thirty-nine billion, nine hundred ninety-five million, four hundred seventy-seven thousand, seven hundred sixty".