1016601506555 has 16 divisors (see below), whose sum is σ = 1237352385024. Its totient is φ = 801673781760.

The previous prime is 1016601506549. The next prime is 1016601506563. The reversal of 1016601506555 is 5556051066101.

It is not a de Polignac number, because 1016601506555 - 2⁴ = 1016601506539 is a prime.

It is a Duffinian number.

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, 181019 + ... + 1437348.

It is an arithmetic number, because the mean of its divisors is an integer number (77334524064).

Almost surely, 2^{1016601506555} is an apocalyptic number.

1016601506555 is a deficient number, since it is larger than the sum of its proper divisors (220750878469).

1016601506555 is a wasteful number, since it uses less digits than its factorization.

1016601506555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620166.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 1016601506555 in words is "one trillion, sixteen billion, six hundred one million, five hundred six thousand, five hundred fifty-five".