2145227361655 has 32 divisors (see below), whose sum is σ = 3124275609600. Its totient is φ = 1381258593792.

The previous prime is 2145227361649. The next prime is 2145227361679. The reversal of 2145227361655 is 5561637225412.

It is not a de Polignac number, because 2145227361655 - 2¹⁷ = 2145227230583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145227361599 and 2145227361608.

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, 14198775 + ... + 14349064.

It is an arithmetic number, because the mean of its divisors is an integer number (97633612800).

Almost surely, 2^{2145227361655} is an apocalyptic number.

2145227361655 is a deficient number, since it is larger than the sum of its proper divisors (979048247945).

2145227361655 is a wasteful number, since it uses less digits than its factorization.

2145227361655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28547983.

The product of its digits is 3024000, while the sum is 49.

The spelling of 2145227361655 in words is "two trillion, one hundred forty-five billion, two hundred twenty-seven million, three hundred sixty-one thousand, six hundred fifty-five".