387170033872 has 40 divisors (see below), whose sum is σ = 757674708840. Its totient is φ = 191641612800.

The previous prime is 387170033851. The next prime is 387170033879. The reversal of 387170033872 is 278330071783.

It can be written as a sum of positive squares in 4 ways, for example, as 296258135616 + 90911898256 = 544296^2 + 301516^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387170033879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16841778 + ... + 16864750.

It is an arithmetic number, because the mean of its divisors is an integer number (18941867721).

Almost surely, 2^387170033872 is an apocalyptic number.

It is an amenable number.

387170033872 is a deficient number, since it is larger than the sum of its proper divisors (370504674968).

387170033872 is a wasteful number, since it uses less digits than its factorization.

387170033872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33511 (or 33505 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 49.

The spelling of 387170033872 in words is "three hundred eighty-seven billion, one hundred seventy million, thirty-three thousand, eight hundred seventy-two".