1642685836099 has 32 divisors (see below), whose sum is σ = 2077180485120. Its totient is φ = 1261900896000.

The previous prime is 1642685836097. The next prime is 1642685836123. The reversal of 1642685836099 is 9906385862461.

It is a cyclic number.

It is not a de Polignac number, because 1642685836099 - 2¹ = 1642685836097 is a prime.

It is a super-2 number, since 2×1642685836099² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1642685836091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1358772 + ... + 2265310.

It is an arithmetic number, because the mean of its divisors is an integer number (64911890160).

Almost surely, 2^{1642685836099} is an apocalyptic number.

1642685836099 is a deficient number, since it is larger than the sum of its proper divisors (434494649021).

1642685836099 is a wasteful number, since it uses less digits than its factorization.

1642685836099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906891.

The product of its (nonzero) digits is 134369280, while the sum is 67.

The spelling of 1642685836099 in words is "one trillion, six hundred forty-two billion, six hundred eighty-five million, eight hundred thirty-six thousand, ninety-nine".