213555405053 has 4 divisors (see below), whose sum is σ = 222840422688. Its totient is φ = 204270387420.

The previous prime is 213555405047. The next prime is 213555405131. The reversal of 213555405053 is 350504555312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213555405053 - 2²² = 213551210749 is a prime.

It is a super-2 number, since 2×213555405053² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213555404998 and 213555405016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213555405043) 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, 4642508783 + ... + 4642508828.

It is an arithmetic number, because the mean of its divisors is an integer number (55710105672).

Almost surely, 2^213555405053 is an apocalyptic number.

213555405053 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

213555405053 is a deficient number, since it is larger than the sum of its proper divisors (9285017635).

213555405053 is an equidigital number, since it uses as much as digits as its factorization.

213555405053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9285017634.

The product of its (nonzero) digits is 225000, while the sum is 38.

The spelling of 213555405053 in words is "two hundred thirteen billion, five hundred fifty-five million, four hundred five thousand, fifty-three".