1550454795566 has 4 divisors (see below), whose sum is σ = 2325682193352. Its totient is φ = 775227397782.

The previous prime is 1550454795559. The next prime is 1550454795599. The reversal of 1550454795566 is 6655974540551.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1550454795499 and 1550454795508.

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, 387613698890 + ... + 387613698893.

It is an arithmetic number, because the mean of its divisors is an integer number (581420548338).

Almost surely, 2^{1550454795566} is an apocalyptic number.

1550454795566 is a deficient number, since it is larger than the sum of its proper divisors (775227397786).

1550454795566 is an equidigital number, since it uses as much as digits as its factorization.

1550454795566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775227397785.

The product of its (nonzero) digits is 113400000, while the sum is 62.

The spelling of 1550454795566 in words is "one trillion, five hundred fifty billion, four hundred fifty-four million, seven hundred ninety-five thousand, five hundred sixty-six".