555261949162556 has 6 divisors (see below), whose sum is σ = 971708411034480. Its totient is φ = 277630974581276.

The previous prime is 555261949162507. The next prime is 555261949162567. The reversal of 555261949162556 is 655261949162555.

It is a self number, because there is not a number n which added to its sum of digits gives 555261949162556.

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, 69407743645316 + ... + 69407743645323.

It is an arithmetic number, because the mean of its divisors is an integer number (161951401839080).

Almost surely, 2^{555261949162556} is an apocalyptic number.

It is an amenable number.

555261949162556 is a deficient number, since it is larger than the sum of its proper divisors (416446461871924).

555261949162556 is a wasteful number, since it uses less digits than its factorization.

555261949162556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138815487290643 (or 138815487290641 counting only the distinct ones).

The product of its digits is 874800000, while the sum is 71.

Subtracting 555261949162556 from its reverse (655261949162555), we obtain a palindrome (99999999999999).

The spelling of 555261949162556 in words is "five hundred fifty-five trillion, two hundred sixty-one billion, nine hundred forty-nine million, one hundred sixty-two thousand, five hundred fifty-six".