1631068817099 has 4 divisors (see below), whose sum is σ = 1631073559200. Its totient is φ = 1631064075000.

The previous prime is 1631068817093. The next prime is 1631068817141. The reversal of 1631068817099 is 9907188601361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1631068817099 - 2²⁸ = 1630800381643 is a prime.

It is a super-2 number, since 2×1631068817099² (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 (1631068817093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1811027 + ... + 2557724.

It is an arithmetic number, because the mean of its divisors is an integer number (407768389800).

Almost surely, 2^{1631068817099} is an apocalyptic number.

1631068817099 is a deficient number, since it is larger than the sum of its proper divisors (4742101).

1631068817099 is an equidigital number, since it uses as much as digits as its factorization.

1631068817099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742100.

The product of its (nonzero) digits is 3919104, while the sum is 59.

The spelling of 1631068817099 in words is "one trillion, six hundred thirty-one billion, sixty-eight million, eight hundred seventeen thousand, ninety-nine".