154161145665505 has 8 divisors (see below), whose sum is σ = 201810954325824. Its totient is φ = 112117196847600.

The previous prime is 154161145665493. The next prime is 154161145665559. The reversal of 154161145665505 is 505566541161451.

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

It is not a de Polignac number, because 154161145665505 - 2¹³ = 154161145657313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55), and also a Moran number because the ratio is a prime number: 2802929921191 = 154161145665505 / (1 + 5 + 4 + 1 + 6 + 1 + 1 + 4 + 5 + 6 + 6 + 5 + 5 + 0 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1401464960541 + ... + 1401464960650.

It is an arithmetic number, because the mean of its divisors is an integer number (25226369290728).

Almost surely, 2^{154161145665505} is an apocalyptic number.

It is an amenable number.

154161145665505 is a deficient number, since it is larger than the sum of its proper divisors (47649808660319).

154161145665505 is a wasteful number, since it uses less digits than its factorization.

154161145665505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802929921207.

The product of its (nonzero) digits is 10800000, while the sum is 55.

The spelling of 154161145665505 in words is "one hundred fifty-four trillion, one hundred sixty-one billion, one hundred forty-five million, six hundred sixty-five thousand, five hundred five".