1066100016505 has 32 divisors (see below), whose sum is σ = 1291499624448. Its totient is φ = 844799155200.

The previous prime is 1066100016461. The next prime is 1066100016517. The reversal of 1066100016505 is 5056100016601.

It is not a de Polignac number, because 1066100016505 - 2¹³ = 1066100008313 is a prime.

It is a super-2 number, since 2×1066100016505² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 461314300 + ... + 461316610.

It is an arithmetic number, because the mean of its divisors is an integer number (40359363264).

Almost surely, 2^{1066100016505} is an apocalyptic number.

It is an amenable number.

1066100016505 is a deficient number, since it is larger than the sum of its proper divisors (225399607943).

1066100016505 is a wasteful number, since it uses less digits than its factorization.

1066100016505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4057.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 1066100016505 in words is "one trillion, sixty-six billion, one hundred million, sixteen thousand, five hundred five".