7838709677420 has 24 divisors (see below), whose sum is σ = 17429601518784. Its totient is φ = 2951043643136.

The previous prime is 7838709677417. The next prime is 7838709677441. The reversal of 7838709677420 is 247769078387.

It is a super-2 number, since 2×7838709677420² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (68).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11527513892 + ... + 11527514571.

It is an arithmetic number, because the mean of its divisors is an integer number (726233396616).

Almost surely, 2^{7838709677420} is an apocalyptic number.

It is an amenable number.

7838709677420 is an abundant number, since it is smaller than the sum of its proper divisors (9590891841364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7838709677420 is a wasteful number, since it uses less digits than its factorization.

7838709677420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23055028489 (or 23055028487 counting only the distinct ones).

The product of its (nonzero) digits is 199148544, while the sum is 68.

It can be divided in two parts, 783870967 and 7420, that added together give a palindrome (783878387).

The spelling of 7838709677420 in words is "seven trillion, eight hundred thirty-eight billion, seven hundred nine million, six hundred seventy-seven thousand, four hundred twenty".