38399519727789 has 64 divisors (see below), whose sum is σ = 56982628355328. Its totient is φ = 22997947822080.

The previous prime is 38399519727787. The next prime is 38399519727823. The reversal of 38399519727789 is 98772791599383.

It is not a de Polignac number, because 38399519727789 - 2¹ = 38399519727787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38399519727787) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 151931167 + ... + 152183699.

It is an arithmetic number, because the mean of its divisors is an integer number (890353568052).

Almost surely, 2^{38399519727789} is an apocalyptic number.

It is an amenable number.

38399519727789 is a deficient number, since it is larger than the sum of its proper divisors (18583108627539).

38399519727789 is a wasteful number, since it uses less digits than its factorization.

38399519727789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253019 (or 252997 counting only the distinct ones).

The product of its digits is 12962436480, while the sum is 87.

The spelling of 38399519727789 in words is "thirty-eight trillion, three hundred ninety-nine billion, five hundred nineteen million, seven hundred twenty-seven thousand, seven hundred eighty-nine".