53689921466 has 4 divisors (see below), whose sum is σ = 80534882202. Its totient is φ = 26844960732.

The previous prime is 53689921451. The next prime is 53689921477. The reversal of 53689921466 is 66412998635.

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., 48609225625 + 5080695841 = 220475^2 + 71279^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13422480365 + ... + 13422480368.

Almost surely, 2^53689921466 is an apocalyptic number.

53689921466 is a deficient number, since it is larger than the sum of its proper divisors (26844960736).

53689921466 is a wasteful number, since it uses less digits than its factorization.

53689921466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26844960735.

The product of its digits is 16796160, while the sum is 59.

The spelling of 53689921466 in words is "fifty-three billion, six hundred eighty-nine million, nine hundred twenty-one thousand, four hundred sixty-six".