213425555501 has 4 divisors (see below), whose sum is σ = 213755425632. Its totient is φ = 213095685372.

The previous prime is 213425555479. The next prime is 213425555503. The reversal of 213425555501 is 105555524312.

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 213425555501 - 2³⁰ = 212351813677 is a prime.

It is a super-2 number, since 2×213425555501² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213425555503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164934095 + ... + 164935388.

It is an arithmetic number, because the mean of its divisors is an integer number (53438856408).

Almost surely, 2^213425555501 is an apocalyptic number.

It is an amenable number.

213425555501 is a deficient number, since it is larger than the sum of its proper divisors (329870131).

213425555501 is an equidigital number, since it uses as much as digits as its factorization.

213425555501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329870130.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 213425555501 in words is "two hundred thirteen billion, four hundred twenty-five million, five hundred fifty-five thousand, five hundred one".