387866603520 has 1664 divisors, whose sum is σ = 1657722101760. Its totient is φ = 85642444800.

The previous prime is 387866603473. The next prime is 387866603521. The reversal of 387866603520 is 25306668783.

It is a super-2 number, since 2×387866603520² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387866603521) 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, 12511825905 + ... + 12511825935.

Almost surely, 2^387866603520 is an apocalyptic number.

387866603520 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 387866603520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (828861050880).

387866603520 is an abundant number, since it is smaller than the sum of its proper divisors (1269855498240).

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

387866603520 is a wasteful number, since it uses less digits than its factorization.

387866603520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 387866603520 in words is "three hundred eighty-seven billion, eight hundred sixty-six million, six hundred three thousand, five hundred twenty".