7428124747847 has 6 divisors (see below), whose sum is σ = 7586189037648. Its totient is φ = 7270061253192.

The previous prime is 7428124747777. The next prime is 7428124747867. The reversal of 7428124747847 is 7487474218247.

It is a happy number.

It is not a de Polignac number, because 7428124747847 - 2²⁴ = 7428107970631 is a prime.

It is a super-2 number, since 2×7428124747847² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7428124747867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18486029 + ... + 18883577.

It is an arithmetic number, because the mean of its divisors is an integer number (1264364839608).

Almost surely, 2^{7428124747847} is an apocalyptic number.

7428124747847 is a deficient number, since it is larger than the sum of its proper divisors (158064289801).

7428124747847 is an frugal number, since it uses more digits than its factorization.

7428124747847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795145 (or 397596 counting only the distinct ones).

The product of its digits is 157351936, while the sum is 65.

The spelling of 7428124747847 in words is "seven trillion, four hundred twenty-eight billion, one hundred twenty-four million, seven hundred forty-seven thousand, eight hundred forty-seven".