213520005245 has 16 divisors (see below), whose sum is σ = 261758504448. Its totient is φ = 167128642560.

The previous prime is 213520005239. The next prime is 213520005301. The reversal of 213520005245 is 542500025312.

It is not a de Polignac number, because 213520005245 - 2²⁰ = 213518956669 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 607517 + ... + 892253.

It is an arithmetic number, because the mean of its divisors is an integer number (16359906528).

Almost surely, 2^213520005245 is an apocalyptic number.

It is an amenable number.

213520005245 is a deficient number, since it is larger than the sum of its proper divisors (48238499203).

213520005245 is a wasteful number, since it uses less digits than its factorization.

213520005245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287980.

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 213520005245 in words is "two hundred thirteen billion, five hundred twenty million, five thousand, two hundred forty-five".