7773989989639 has 8 divisors (see below), whose sum is σ = 7785989444592. Its totient is φ = 7761998472960.

The previous prime is 7773989989613. The next prime is 7773989989693. The reversal of 7773989989639 is 9369899893777.

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 7773989989639 - 2¹³ = 7773989981447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7773989989439) 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, 22954 + ... + 3943159.

It is an arithmetic number, because the mean of its divisors is an integer number (973248680574).

Almost surely, 2^{7773989989639} is an apocalyptic number.

7773989989639 is a deficient number, since it is larger than the sum of its proper divisors (11999454953).

7773989989639 is a wasteful number, since it uses less digits than its factorization.

7773989989639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3969137.

The product of its digits is 69997156992, while the sum is 94.

The spelling of 7773989989639 in words is "seven trillion, seven hundred seventy-three billion, nine hundred eighty-nine million, nine hundred eighty-nine thousand, six hundred thirty-nine".