39720124408 has 8 divisors (see below), whose sum is σ = 74475233280. Its totient is φ = 19860062200.

The previous prime is 39720124387. The next prime is 39720124439. The reversal of 39720124408 is 80442102793.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×39720124408³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2482507768 + ... + 2482507783.

It is an arithmetic number, because the mean of its divisors is an integer number (9309404160).

Almost surely, 2^39720124408 is an apocalyptic number.

It is an amenable number.

39720124408 is a deficient number, since it is larger than the sum of its proper divisors (34755108872).

39720124408 is a wasteful number, since it uses less digits than its factorization.

39720124408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4965015557 (or 4965015553 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 39720124408 in words is "thirty-nine billion, seven hundred twenty million, one hundred twenty-four thousand, four hundred eight".