201515432384 has 28 divisors (see below), whose sum is σ = 457008213744. Its totient is φ = 86363756544.

The previous prime is 201515432381. The next prime is 201515432387. The reversal of 201515432384 is 483234515102.

201515432384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (201515432381) and next prime (201515432387).

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201515432381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224905169 + ... + 224906064.

Almost surely, 2^201515432384 is an apocalyptic number.

It is an amenable number.

201515432384 is an abundant number, since it is smaller than the sum of its proper divisors (255492781360).

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

201515432384 is an equidigital number, since it uses as much as digits as its factorization.

201515432384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449811252 (or 449811242 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 201515432384 its reverse (483234515102), we get a palindrome (684749947486).

The spelling of 201515432384 in words is "two hundred one billion, five hundred fifteen million, four hundred thirty-two thousand, three hundred eighty-four".