1655505605056 has 28 divisors (see below), whose sum is σ = 3317038549552. Its totient is φ = 819716364288.

The previous prime is 1655505605051. The next prime is 1655505605059. The reversal of 1655505605056 is 6505065055561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655505605051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125562705 + ... + 125575888.

It is an arithmetic number, because the mean of its divisors is an integer number (118465662484).

Almost surely, 2^{1655505605056} is an apocalyptic number.

1655505605056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1655505605056 is an abundant number, since it is smaller than the sum of its proper divisors (1661532944496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1655505605056 is a wasteful number, since it uses less digits than its factorization.

1655505605056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251138708 (or 251138698 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 49.

The spelling of 1655505605056 in words is "one trillion, six hundred fifty-five billion, five hundred five million, six hundred five thousand, fifty-six".