213815908245 has 32 divisors (see below), whose sum is σ = 360210862080. Its totient is φ = 108003343680.

The previous prime is 213815908223. The next prime is 213815908279. The reversal of 213815908245 is 542809518312.

It is not a de Polignac number, because 213815908245 - 2⁵ = 213815908213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213815908194 and 213815908203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 944052 + ... + 1148418.

It is an arithmetic number, because the mean of its divisors is an integer number (11256589440).

Almost surely, 2^213815908245 is an apocalyptic number.

It is an amenable number.

213815908245 is a deficient number, since it is larger than the sum of its proper divisors (146394953835).

213815908245 is a wasteful number, since it uses less digits than its factorization.

213815908245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208065.

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 213815908245 in words is "two hundred thirteen billion, eight hundred fifteen million, nine hundred eight thousand, two hundred forty-five".