213420203035551 has 48 divisors (see below), whose sum is σ = 324610532413440. Its totient is φ = 134745202244160.

The previous prime is 213420203035531. The next prime is 213420203035631. The reversal of 213420203035551 is 155530302024312.

213420203035551 is a `hidden beast` number, since 2 + 1 + 3 + 4 + 20 + 20 + 30 + 35 + 551 = 666.

It is not a de Polignac number, because 213420203035551 - 2⁵ = 213420203035519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213420203035531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7592038986 + ... + 7592067096.

It is an arithmetic number, because the mean of its divisors is an integer number (6762719425280).

Almost surely, 2^{213420203035551} is an apocalyptic number.

213420203035551 is a deficient number, since it is larger than the sum of its proper divisors (111190329377889).

213420203035551 is a wasteful number, since it uses less digits than its factorization.

213420203035551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41876 (or 41873 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 213420203035551 its reverse (155530302024312), we get a palindrome (368950505059863).

The spelling of 213420203035551 in words is "two hundred thirteen trillion, four hundred twenty billion, two hundred three million, thirty-five thousand, five hundred fifty-one".