1555161050166 has 16 divisors (see below), whose sum is σ = 3132698520000. Its totient is φ = 514657613448.

The previous prime is 1555161050143. The next prime is 1555161050171. The reversal of 1555161050166 is 6610501615551.

It is a congruent 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, 932349916 + ... + 932351583.

It is an arithmetic number, because the mean of its divisors is an integer number (195793657500).

Almost surely, 2^{1555161050166} is an apocalyptic number.

1555161050166 is an abundant number, since it is smaller than the sum of its proper divisors (1577537469834).

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

1555161050166 is a wasteful number, since it uses less digits than its factorization.

1555161050166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864701643.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 1555161050166 in words is "one trillion, five hundred fifty-five billion, one hundred sixty-one million, fifty thousand, one hundred sixty-six".