1605061420155 has 16 divisors (see below), whose sum is σ = 2853442524960. Its totient is φ = 856032757344.

The previous prime is 1605061420141. The next prime is 1605061420163. The reversal of 1605061420155 is 5510241605061.

1605061420155 is a `hidden beast` number, since 1 + 6 + 0 + 5 + 0 + 614 + 20 + 15 + 5 = 666.

It is not a de Polignac number, because 1605061420155 - 2¹⁸ = 1605061158011 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5944671792 + ... + 5944672061.

It is an arithmetic number, because the mean of its divisors is an integer number (178340157810).

Almost surely, 2^{1605061420155} is an apocalyptic number.

1605061420155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1605061420155 is a deficient number, since it is larger than the sum of its proper divisors (1248381104805).

1605061420155 is a wasteful number, since it uses less digits than its factorization.

1605061420155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11889343867 (or 11889343861 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 1605061420155 in words is "one trillion, six hundred five billion, sixty-one million, four hundred twenty thousand, one hundred fifty-five".