215012445543 has 32 divisors (see below), whose sum is σ = 364137374720. Its totient is φ = 122832145440.

The previous prime is 215012445517. The next prime is 215012445551. The reversal of 215012445543 is 345544210512.

215012445543 is a `hidden beast` number, since 2 + 1 + 50 + 1 + 24 + 45 + 543 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-215012445543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215012445498 and 215012445507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215012445143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 586038 + ... + 879468.

It is an arithmetic number, because the mean of its divisors is an integer number (11379292960).

Almost surely, 2^215012445543 is an apocalyptic number.

215012445543 is a deficient number, since it is larger than the sum of its proper divisors (149124929177).

215012445543 is a wasteful number, since it uses less digits than its factorization.

215012445543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297324 (or 297318 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 215012445543 in words is "two hundred fifteen billion, twelve million, four hundred forty-five thousand, five hundred forty-three".