213015476623 has 4 divisors (see below), whose sum is σ = 213016808080. Its totient is φ = 213014145168.

The previous prime is 213015476617. The next prime is 213015476633. The reversal of 213015476623 is 326674510312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213015476623 - 2²⁵ = 212981922191 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 (213015476633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386790 + ... + 758707.

It is an arithmetic number, because the mean of its divisors is an integer number (53254202020).

Almost surely, 2^213015476623 is an apocalyptic number.

213015476623 is a deficient number, since it is larger than the sum of its proper divisors (1331457).

213015476623 is a wasteful number, since it uses less digits than its factorization.

213015476623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331456.

The product of its (nonzero) digits is 181440, while the sum is 40.

Adding to 213015476623 its reverse (326674510312), we get a palindrome (539689986935).

The spelling of 213015476623 in words is "two hundred thirteen billion, fifteen million, four hundred seventy-six thousand, six hundred twenty-three".