215016571464 has 128 divisors (see below), whose sum is σ = 572036784000. Its totient is φ = 67157766144.

The previous prime is 215016571463. The next prime is 215016571513. The reversal of 215016571464 is 464175610512.

It is not an unprimeable number, because it can be changed into a prime (215016571463) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 30465024 + ... + 30472080.

It is an arithmetic number, because the mean of its divisors is an integer number (4469037375).

Almost surely, 2^215016571464 is an apocalyptic number.

215016571464 is a gapful number since it is divisible by the number (24) 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 215016571464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286018392000).

215016571464 is an abundant number, since it is smaller than the sum of its proper divisors (357020212536).

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

215016571464 is a wasteful number, since it uses less digits than its factorization.

215016571464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7807 (or 7803 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 215016571464 in words is "two hundred fifteen billion, sixteen million, five hundred seventy-one thousand, four hundred sixty-four".