213780405245 has 16 divisors (see below), whose sum is σ = 282575060352. Its totient is φ = 153967172160.

The previous prime is 213780405211. The next prime is 213780405259. The reversal of 213780405245 is 542504087312.

It is not a de Polignac number, because 213780405245 - 2²⁰ = 213779356669 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, 18862862 + ... + 18874191.

It is an arithmetic number, because the mean of its divisors is an integer number (17660941272).

Almost surely, 2^213780405245 is an apocalyptic number.

It is an amenable number.

213780405245 is a deficient number, since it is larger than the sum of its proper divisors (68794655107).

213780405245 is a wasteful number, since it uses less digits than its factorization.

213780405245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37737172.

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 213780405245 in words is "two hundred thirteen billion, seven hundred eighty million, four hundred five thousand, two hundred forty-five".