215019549952 has 36 divisors (see below), whose sum is σ = 429231862836. Its totient is φ = 107501588480.

The previous prime is 215019549937. The next prime is 215019549959. The reversal of 215019549952 is 259945910512.

It can be written as a sum of positive squares in 2 ways, for example, as 21264638976 + 193754910976 = 145824^2 + 440176^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 215019549952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215019549959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4703268 + ... + 4748764.

It is an arithmetic number, because the mean of its divisors is an integer number (11923107301).

Almost surely, 2^215019549952 is an apocalyptic number.

It is an amenable number.

215019549952 is a deficient number, since it is larger than the sum of its proper divisors (214212312884).

215019549952 is an equidigital number, since it uses as much as digits as its factorization.

215019549952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63974 (or 63960 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 52.

The spelling of 215019549952 in words is "two hundred fifteen billion, nineteen million, five hundred forty-nine thousand, nine hundred fifty-two".