213100051555 has 8 divisors (see below), whose sum is σ = 255918456000. Its totient is φ = 170347778496.

The previous prime is 213100051543. The next prime is 213100051621. The reversal of 213100051555 is 555150001312.

213100051555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213100051555 - 2¹³ = 213100043363 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16525755 + ... + 16538644.

It is an arithmetic number, because the mean of its divisors is an integer number (31989807000).

Almost surely, 2^213100051555 is an apocalyptic number.

213100051555 is a deficient number, since it is larger than the sum of its proper divisors (42818404445).

213100051555 is a wasteful number, since it uses less digits than its factorization.

213100051555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33065693.

The product of its (nonzero) digits is 3750, while the sum is 28.

Adding to 213100051555 its reverse (555150001312), we get a palindrome (768250052867).

The spelling of 213100051555 in words is "two hundred thirteen billion, one hundred million, fifty-one thousand, five hundred fifty-five".