1553551155044 has 12 divisors (see below), whose sum is σ = 3107102310144. Its totient is φ = 665807637864.

The previous prime is 1553551155001. The next prime is 1553551155049. The reversal of 1553551155044 is 4405511553551.

1553551155044 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1553551154986 and 1553551155004.

It is not an unprimeable number, because it can be changed into a prime (1553551155049) 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, 27741984884 + ... + 27741984939.

It is an arithmetic number, because the mean of its divisors is an integer number (258925192512).

Almost surely, 2^{1553551155044} is an apocalyptic number.

1553551155044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1553551155044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1553551155044 is a wasteful number, since it uses less digits than its factorization.

1553551155044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55483969834 (or 55483969832 counting only the distinct ones).

The product of its (nonzero) digits is 750000, while the sum is 44.

The spelling of 1553551155044 in words is "one trillion, five hundred fifty-three billion, five hundred fifty-one million, one hundred fifty-five thousand, forty-four".