2155456532056 has 8 divisors (see below), whose sum is σ = 4041480997620. Its totient is φ = 1077728266024.

The previous prime is 2155456531931. The next prime is 2155456532153. The reversal of 2155456532056 is 6502356545512.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134716033246 + ... + 134716033261.

Almost surely, 2^{2155456532056} is an apocalyptic number.

It is an amenable number.

2155456532056 is a deficient number, since it is larger than the sum of its proper divisors (1886024465564).

2155456532056 is a wasteful number, since it uses less digits than its factorization.

2155456532056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269432066513 (or 269432066509 counting only the distinct ones).

The product of its (nonzero) digits is 5400000, while the sum is 49.

The spelling of 2155456532056 in words is "two trillion, one hundred fifty-five billion, four hundred fifty-six million, five hundred thirty-two thousand, fifty-six".