212553311655 has 32 divisors (see below), whose sum is σ = 343490734080. Its totient is φ = 112227287040.

The previous prime is 212553311647. The next prime is 212553311713. The reversal of 212553311655 is 556113355212.

It is not a de Polignac number, because 212553311655 - 2³ = 212553311647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5590951 + ... + 5628839.

It is an arithmetic number, because the mean of its divisors is an integer number (10734085440).

Almost surely, 2^212553311655 is an apocalyptic number.

212553311655 is a deficient number, since it is larger than the sum of its proper divisors (130937422425).

212553311655 is a wasteful number, since it uses less digits than its factorization.

212553311655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41631.

The product of its digits is 135000, while the sum is 39.

Adding to 212553311655 its reverse (556113355212), we get a palindrome (768666666867).

The spelling of 212553311655 in words is "two hundred twelve billion, five hundred fifty-three million, three hundred eleven thousand, six hundred fifty-five".