213765922845 has 24 divisors (see below), whose sum is σ = 370576376352. Its totient is φ = 113993484000.

The previous prime is 213765922837. The next prime is 213765922871. The reversal of 213765922845 is 548229567312.

213765922845 is a `hidden beast` number, since 2 + 1 + 3 + 7 + 6 + 592 + 2 + 8 + 45 = 666.

It is not a de Polignac number, because 213765922845 - 2³ = 213765922837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213765922791 and 213765922800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37270 + ... + 654920.

It is an arithmetic number, because the mean of its divisors is an integer number (15440682348).

Almost surely, 2^213765922845 is an apocalyptic number.

It is an amenable number.

213765922845 is a deficient number, since it is larger than the sum of its proper divisors (156810453507).

213765922845 is a wasteful number, since it uses less digits than its factorization.

213765922845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625353 (or 625350 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 213765922845 in words is "two hundred thirteen billion, seven hundred sixty-five million, nine hundred twenty-two thousand, eight hundred forty-five".