38399143620 has 96 divisors (see below), whose sum is σ = 111152942208. Its totient is φ = 9898463232.

The previous prime is 38399143561. The next prime is 38399143709. The reversal of 38399143620 is 2634199383.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 38399143620.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173542 + ... + 326978.

It is an arithmetic number, because the mean of its divisors is an integer number (1157843148).

Almost surely, 2^38399143620 is an apocalyptic number.

38399143620 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 38399143620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55576471104).

38399143620 is an abundant number, since it is smaller than the sum of its proper divisors (72753798588).

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

38399143620 is a wasteful number, since it uses less digits than its factorization.

38399143620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153589 (or 153587 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 48.

The spelling of 38399143620 in words is "thirty-eight billion, three hundred ninety-nine million, one hundred forty-three thousand, six hundred twenty".