215313001543 has 12 divisors (see below), whose sum is σ = 234302134752. Its totient is φ = 197704897280.

The previous prime is 215313001523. The next prime is 215313001549. The reversal of 215313001543 is 345100313512.

It is a happy number.

It is not a de Polignac number, because 215313001543 - 2⁹ = 215313001031 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 (215313001549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9073855 + ... + 9097552.

It is an arithmetic number, because the mean of its divisors is an integer number (19525177896).

Almost surely, 2^215313001543 is an apocalyptic number.

215313001543 is a deficient number, since it is larger than the sum of its proper divisors (18989133209).

215313001543 is a wasteful number, since it uses less digits than its factorization.

215313001543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18171482 (or 18171465 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 215313001543 in words is "two hundred fifteen billion, three hundred thirteen million, one thousand, five hundred forty-three".