66454230434 has 16 divisors (see below), whose sum is σ = 102822516600. Its totient is φ = 32187901824.

The previous prime is 66454230433. The next prime is 66454230461. The reversal of 66454230434 is 43403245466.

It can be written as a sum of positive squares in 4 ways, for example, as 64188756025 + 2265474409 = 253355^2 + 47597^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66454230391 and 66454230400.

It is not an unprimeable number, because it can be changed into a prime (66454230431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1943819 + ... + 1977710.

Almost surely, 2^66454230434 is an apocalyptic number.

66454230434 is a deficient number, since it is larger than the sum of its proper divisors (36368286166).

66454230434 is a wasteful number, since it uses less digits than its factorization.

66454230434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3921797.

The product of its (nonzero) digits is 829440, while the sum is 41.

The spelling of 66454230434 in words is "sixty-six billion, four hundred fifty-four million, two hundred thirty thousand, four hundred thirty-four".