215072945543 has 16 divisors (see below), whose sum is σ = 229696508160. Its totient is φ = 200931628800.

The previous prime is 215072945533. The next prime is 215072945567. The reversal of 215072945543 is 345549270512.

It is a cyclic number.

It is not a de Polignac number, because 215072945543 - 2²⁶ = 215005836679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215072945533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11603123 + ... + 11621643.

It is an arithmetic number, because the mean of its divisors is an integer number (14356031760).

Almost surely, 2^215072945543 is an apocalyptic number.

215072945543 is a deficient number, since it is larger than the sum of its proper divisors (14623562617).

215072945543 is a wasteful number, since it uses less digits than its factorization.

215072945543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31498.

The product of its (nonzero) digits is 1512000, while the sum is 47.

The spelling of 215072945543 in words is "two hundred fifteen billion, seventy-two million, nine hundred forty-five thousand, five hundred forty-three".