215242354413 has 12 divisors (see below), whose sum is σ = 310955156928. Its totient is φ = 143472041160.

The previous prime is 215242354409. The next prime is 215242354429. The reversal of 215242354413 is 314453242512.

It is a happy number.

215242354413 is a `hidden beast` number, since 2 + 1 + 5 + 2 + 4 + 235 + 4 + 413 = 666.

It is not a de Polignac number, because 215242354413 - 2² = 215242354409 is a prime.

It is a super-2 number, since 2×215242354413² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215242354403) 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, 1845423 + ... + 1958588.

It is an arithmetic number, because the mean of its divisors is an integer number (25912929744).

Almost surely, 2^215242354413 is an apocalyptic number.

It is an amenable number.

215242354413 is a deficient number, since it is larger than the sum of its proper divisors (95712802515).

215242354413 is a wasteful number, since it uses less digits than its factorization.

215242354413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810304 (or 3810301 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

Adding to 215242354413 its reverse (314453242512), we get a palindrome (529695596925).

The spelling of 215242354413 in words is "two hundred fifteen billion, two hundred forty-two million, three hundred fifty-four thousand, four hundred thirteen".