7816479426 has 224 divisors, whose sum is σ = 21361242240. Its totient is φ = 2094481152.

The previous prime is 7816479323. The next prime is 7816479449. The reversal of 7816479426 is 6249746187.

It is a super-2 number, since 2×7816479426² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 33547006 + ... + 33547238.

Almost surely, 2^7816479426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7816479426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10680621120).

7816479426 is an abundant number, since it is smaller than the sum of its proper divisors (13544762814).

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

7816479426 is a wasteful number, since it uses less digits than its factorization.

7816479426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 437 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 7816479426 is about 88410.8558153353. The cubic root of 7816479426 is about 1984.5881615083.

The spelling of 7816479426 in words is "seven billion, eight hundred sixteen million, four hundred seventy-nine thousand, four hundred twenty-six".