213404555530 has 32 divisors (see below), whose sum is σ = 396872493696. Its totient is φ = 82557388224.

The previous prime is 213404555513. The next prime is 213404555543. The reversal of 213404555530 is 35555404312.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 213404555530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1665064 + ... + 1788643.

It is an arithmetic number, because the mean of its divisors is an integer number (12402265428).

Almost surely, 2^213404555530 is an apocalyptic number.

213404555530 is a deficient number, since it is larger than the sum of its proper divisors (183467938166).

213404555530 is a wasteful number, since it uses less digits than its factorization.

213404555530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453918.

The product of its (nonzero) digits is 180000, while the sum is 37.

Adding to 213404555530 its reverse (35555404312), we get a palindrome (248959959842).

The spelling of 213404555530 in words is "two hundred thirteen billion, four hundred four million, five hundred fifty-five thousand, five hundred thirty".