1035643061666 has 16 divisors (see below), whose sum is σ = 1689300131256. Its totient is φ = 474189509376.

The previous prime is 1035643061641. The next prime is 1035643061699. The reversal of 1035643061666 is 6661603465301.

It can be written as a sum of positive squares in 4 ways, for example, as 978376178641 + 57266883025 = 989129^2 + 239305^2 .

It is a super-3 number, since 3×1035643061666³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1035643061666.

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, 411621581 + ... + 411624096.

Almost surely, 2^{1035643061666} is an apocalyptic number.

1035643061666 is a deficient number, since it is larger than the sum of its proper divisors (653657069590).

1035643061666 is a wasteful number, since it uses less digits than its factorization.

1035643061666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823245733.

The product of its (nonzero) digits is 1399680, while the sum is 47.

The spelling of 1035643061666 in words is "one trillion, thirty-five billion, six hundred forty-three million, sixty-one thousand, six hundred sixty-six".