39917997584080 has 360 divisors, whose sum is σ = 118719796196736. Its totient is φ = 12436632552960.

The previous prime is 39917997584071. The next prime is 39917997584083. The reversal of 39917997584080 is 8048579971993.

It is a super-2 number, since 2×39917997584080² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39917997584083) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1187206149 + ... + 1187239771.

Almost surely, 2^{39917997584080} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39917997584080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59359898098368).

39917997584080 is an abundant number, since it is smaller than the sum of its proper divisors (78801798612656).

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

39917997584080 is a wasteful number, since it uses less digits than its factorization.

39917997584080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36175 (or 36151 counting only the distinct ones).

The product of its (nonzero) digits is 1234517760, while the sum is 79.

The spelling of 39917997584080 in words is "thirty-nine trillion, nine hundred seventeen billion, nine hundred ninety-seven million, five hundred eighty-four thousand, eighty".