213550730451 has 80 divisors (see below), whose sum is σ = 344420208000. Its totient is φ = 131425846272.

The previous prime is 213550730447. The next prime is 213550730483. The reversal of 213550730451 is 154037055312.

213550730451 is a `hidden beast` number, since 2 + 135 + 5 + 0 + 73 + 0 + 451 = 666.

It is not a de Polignac number, because 213550730451 - 2² = 213550730447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213550730051) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 29709880 + ... + 29717066.

It is an arithmetic number, because the mean of its divisors is an integer number (4305252600).

Almost surely, 2^213550730451 is an apocalyptic number.

213550730451 is a deficient number, since it is larger than the sum of its proper divisors (130869477549).

213550730451 is a wasteful number, since it uses less digits than its factorization.

213550730451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7710 (or 7701 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

Adding to 213550730451 its reverse (154037055312), we get a palindrome (367587785763).

The spelling of 213550730451 in words is "two hundred thirteen billion, five hundred fifty million, seven hundred thirty thousand, four hundred fifty-one".