215350433451 has 12 divisors (see below), whose sum is σ = 311147879328. Its totient is φ = 143527197744.

The previous prime is 215350433449. The next prime is 215350433471. The reversal of 215350433451 is 154334053512.

215350433451 is a `hidden beast` number, since 2 + 1 + 535 + 0 + 43 + 34 + 51 = 666.

It is not a de Polignac number, because 215350433451 - 2¹ = 215350433449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215350433471) 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, 3278835 + ... + 3343868.

It is an arithmetic number, because the mean of its divisors is an integer number (25928989944).

Almost surely, 2^215350433451 is an apocalyptic number.

215350433451 is a deficient number, since it is larger than the sum of its proper divisors (95797445877).

215350433451 is a wasteful number, since it uses less digits than its factorization.

215350433451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6626322 (or 6626319 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 215350433451 its reverse (154334053512), we get a palindrome (369684486963).

The spelling of 215350433451 in words is "two hundred fifteen billion, three hundred fifty million, four hundred thirty-three thousand, four hundred fifty-one".