1639677139489 has 8 divisors (see below), whose sum is σ = 1641071130048. Its totient is φ = 1638283323600.

The previous prime is 1639677139459. The next prime is 1639677139511. The reversal of 1639677139489 is 9849317769361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1639677139489 - 2²⁵ = 1639643585057 is a prime.

It is a super-2 number, since 2×1639677139489² (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 (1639677139459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24493914 + ... + 24560764.

It is an arithmetic number, because the mean of its divisors is an integer number (205133891256).

Almost surely, 2^{1639677139489} is an apocalyptic number.

It is an amenable number.

1639677139489 is a deficient number, since it is larger than the sum of its proper divisors (1393990559).

1639677139489 is a wasteful number, since it uses less digits than its factorization.

1639677139489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87335.

The product of its digits is 370355328, while the sum is 73.

The spelling of 1639677139489 in words is "one trillion, six hundred thirty-nine billion, six hundred seventy-seven million, one hundred thirty-nine thousand, four hundred eighty-nine".