7814305870066 has 4 divisors (see below), whose sum is σ = 11721458805102. Its totient is φ = 3907152935032.

The previous prime is 7814305870031. The next prime is 7814305870067. The reversal of 7814305870066 is 6600785034187.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7723002182841 + 91303687225 = 2779029^2 + 302165^2 .

It is a super-2 number, since 2×7814305870066² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7814305869989 and 7814305870016.

It is not an unprimeable number, because it can be changed into a prime (7814305870067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1953576467515 + ... + 1953576467518.

Almost surely, 2^{7814305870066} is an apocalyptic number.

7814305870066 is a deficient number, since it is larger than the sum of its proper divisors (3907152935036).

7814305870066 is a wasteful number, since it uses less digits than its factorization.

7814305870066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907152935035.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 7814305870066 in words is "seven trillion, eight hundred fourteen billion, three hundred five million, eight hundred seventy thousand, sixty-six".