2155504514552 has 8 divisors (see below), whose sum is σ = 4041570964800. Its totient is φ = 1077752257272.

The previous prime is 2155504514543. The next prime is 2155504514599. The reversal of 2155504514552 is 2554154055512.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134719032152 + ... + 134719032167.

It is an arithmetic number, because the mean of its divisors is an integer number (505196370600).

Almost surely, 2^{2155504514552} is an apocalyptic number.

It is an amenable number.

2155504514552 is a deficient number, since it is larger than the sum of its proper divisors (1886066450248).

2155504514552 is a wasteful number, since it uses less digits than its factorization.

2155504514552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269438064325 (or 269438064321 counting only the distinct ones).

The product of its (nonzero) digits is 1000000, while the sum is 44.

The spelling of 2155504514552 in words is "two trillion, one hundred fifty-five billion, five hundred four million, five hundred fourteen thousand, five hundred fifty-two".