7812005427 has 12 divisors (see below), whose sum is σ = 11947773240. Its totient is φ = 4901650368.

The previous prime is 7812005419. The next prime is 7812005503. The reversal of 7812005427 is 7245002187.

It is not a de Polignac number, because 7812005427 - 2³ = 7812005419 is a prime.

It is a super-2 number, since 2×7812005427² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7812005391 and 7812005400.

It is not an unprimeable number, because it can be changed into a prime (7812005417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25529277 + ... + 25529582.

It is an arithmetic number, because the mean of its divisors is an integer number (995647770).

Almost surely, 2^7812005427 is an apocalyptic number.

7812005427 is a deficient number, since it is larger than the sum of its proper divisors (4135767813).

7812005427 is a wasteful number, since it uses less digits than its factorization.

7812005427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51058882 (or 51058879 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 7812005427 is about 88385.5498766625. The cubic root of 7812005427 is about 1984.2094428393.

The spelling of 7812005427 in words is "seven billion, eight hundred twelve million, five thousand, four hundred twenty-seven".