1550551606505 has 8 divisors (see below), whose sum is σ = 2029813012224. Its totient is φ = 1127673895600.

The previous prime is 1550551606489. The next prime is 1550551606537. The reversal of 1550551606505 is 5056061550551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1550551606505 - 2⁴ = 1550551606489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14095923641 + ... + 14095923750.

It is an arithmetic number, because the mean of its divisors is an integer number (253726626528).

Almost surely, 2^{1550551606505} is an apocalyptic number.

It is an amenable number.

1550551606505 is a deficient number, since it is larger than the sum of its proper divisors (479261405719).

1550551606505 is a wasteful number, since it uses less digits than its factorization.

1550551606505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28191847407.

The product of its (nonzero) digits is 562500, while the sum is 44.

The spelling of 1550551606505 in words is "one trillion, five hundred fifty billion, five hundred fifty-one million, six hundred six thousand, five hundred five".