2135212025655 has 16 divisors (see below), whose sum is σ = 3419589826944. Its totient is φ = 1137696218400.

The previous prime is 2135212025629. The next prime is 2135212025671. The reversal of 2135212025655 is 5565202125312.

It is not a de Polignac number, because 2135212025655 - 2²¹ = 2135209928503 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67704249 + ... + 67735778.

It is an arithmetic number, because the mean of its divisors is an integer number (213724364184).

Almost surely, 2^{2135212025655} is an apocalyptic number.

2135212025655 is a deficient number, since it is larger than the sum of its proper divisors (1284377801289).

2135212025655 is a wasteful number, since it uses less digits than its factorization.

2135212025655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135441086.

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 2135212025655 in words is "two trillion, one hundred thirty-five billion, two hundred twelve million, twenty-five thousand, six hundred fifty-five".