387139159680 has 1024 divisors, whose sum is σ = 1558197043200. Its totient is φ = 79594389504.

The previous prime is 387139159679. The next prime is 387139159681. The reversal of 387139159680 is 86951931783.

It is an interprime number because it is at equal distance from previous prime (387139159679) and next prime (387139159681).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (387139159681) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1619829001 + ... + 1619829239.

It is an arithmetic number, because the mean of its divisors is an integer number (1521676800).

Almost surely, 2^387139159680 is an apocalyptic number.

387139159680 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 387139159680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (779098521600).

387139159680 is an abundant number, since it is smaller than the sum of its proper divisors (1171057883520).

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

387139159680 is a wasteful number, since it uses less digits than its factorization.

387139159680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 387139159680 in words is "three hundred eighty-seven billion, one hundred thirty-nine million, one hundred fifty-nine thousand, six hundred eighty".