215901982552 has 32 divisors (see below), whose sum is σ = 412086988800. Its totient is φ = 106026429600.

The previous prime is 215901982531. The next prime is 215901982567. The reversal of 215901982552 is 255289109512.

It is a super-2 number, since 2×215901982552² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215901982496 and 215901982505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 773574 + ... + 1014997.

It is an arithmetic number, because the mean of its divisors is an integer number (12877718400).

Almost surely, 2^215901982552 is an apocalyptic number.

It is an amenable number.

215901982552 is a deficient number, since it is larger than the sum of its proper divisors (196185006248).

215901982552 is a wasteful number, since it uses less digits than its factorization.

215901982552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788847 (or 1788843 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 49.

The spelling of 215901982552 in words is "two hundred fifteen billion, nine hundred one million, nine hundred eighty-two thousand, five hundred fifty-two".