39149798128 has 120 divisors (see below), whose sum is σ = 92351901600. Its totient is φ = 16000427520.

The previous prime is 39149798119. The next prime is 39149798141. The reversal of 39149798128 is 82189794193.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6290058 + ... + 6296278.

It is an arithmetic number, because the mean of its divisors is an integer number (769599180).

Almost surely, 2^39149798128 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 39149798128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46175950800).

39149798128 is an abundant number, since it is smaller than the sum of its proper divisors (53202103472).

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

39149798128 is a wasteful number, since it uses less digits than its factorization.

39149798128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6615 (or 6602 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 61.

The spelling of 39149798128 in words is "thirty-nine billion, one hundred forty-nine million, seven hundred ninety-eight thousand, one hundred twenty-eight".