20415464632466 has 8 divisors (see below), whose sum is σ = 30846723934140. Its totient is φ = 10133223321088.

The previous prime is 20415464632463. The next prime is 20415464632531. The reversal of 20415464632466 is 66423646451402.

It can be written as a sum of positive squares in 2 ways, for example, as 17087682375625 + 3327782256841 = 4133725^2 + 1824221^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20415464632466² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20415464632463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37254497231 + ... + 37254497778.

Almost surely, 2^{20415464632466} is an apocalyptic number.

20415464632466 is a deficient number, since it is larger than the sum of its proper divisors (10431259301674).

20415464632466 is a wasteful number, since it uses less digits than its factorization.

20415464632466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74508995148.

The product of its (nonzero) digits is 19906560, while the sum is 53.

The spelling of 20415464632466 in words is "twenty trillion, four hundred fifteen billion, four hundred sixty-four million, six hundred thirty-two thousand, four hundred sixty-six".