1355555666672 has 40 divisors (see below), whose sum is σ = 2797928837760. Its totient is φ = 634369095360.

The previous prime is 1355555666671. The next prime is 1355555666719. The reversal of 1355555666672 is 2766665555531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355555666671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26836604 + ... + 26887067.

It is an arithmetic number, because the mean of its divisors is an integer number (69948220944).

Almost surely, 2^{1355555666672} is an apocalyptic number.

It is an amenable number.

1355555666672 is an abundant number, since it is smaller than the sum of its proper divisors (1442373171088).

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

1355555666672 is a wasteful number, since it uses less digits than its factorization.

1355555666672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53723781 (or 53723775 counting only the distinct ones).

The product of its digits is 170100000, while the sum is 62.

The spelling of 1355555666672 in words is "one trillion, three hundred fifty-five billion, five hundred fifty-five million, six hundred sixty-six thousand, six hundred seventy-two".