1655888121159 has 32 divisors (see below), whose sum is σ = 2273403874560. Its totient is φ = 1071742586112.

The previous prime is 1655888121157. The next prime is 1655888121187. The reversal of 1655888121159 is 9511218885561.

It is a happy number.

It is not a de Polignac number, because 1655888121159 - 2¹ = 1655888121157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655888121157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3611337 + ... + 4043949.

It is an arithmetic number, because the mean of its divisors is an integer number (71043871080).

Almost surely, 2^{1655888121159} is an apocalyptic number.

1655888121159 is a deficient number, since it is larger than the sum of its proper divisors (617515753401).

1655888121159 is a wasteful number, since it uses less digits than its factorization.

1655888121159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432959.

The product of its digits is 6912000, while the sum is 60.

The spelling of 1655888121159 in words is "one trillion, six hundred fifty-five billion, eight hundred eighty-eight million, one hundred twenty-one thousand, one hundred fifty-nine".