1039990640833 has 4 divisors (see below), whose sum is σ = 1101166560900. Its totient is φ = 978814720768.

The previous prime is 1039990640831. The next prime is 1039990640837. The reversal of 1039990640833 is 3380460999301.

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

It can be written as a sum of positive squares in 2 ways, for example, as 698942816784 + 341047824049 = 836028^2 + 583993^2 .

It is a cyclic number.

It is not a de Polignac number, because 1039990640833 - 2¹ = 1039990640831 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1039990640831) 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, 30587960008 + ... + 30587960041.

It is an arithmetic number, because the mean of its divisors is an integer number (275291640225).

Almost surely, 2^{1039990640833} is an apocalyptic number.

It is an amenable number.

1039990640833 is a deficient number, since it is larger than the sum of its proper divisors (61175920067).

1039990640833 is an equidigital number, since it uses as much as digits as its factorization.

1039990640833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61175920066.

The product of its (nonzero) digits is 3779136, while the sum is 55.

The spelling of 1039990640833 in words is "one trillion, thirty-nine billion, nine hundred ninety million, six hundred forty thousand, eight hundred thirty-three".