53566356406 has 4 divisors (see below), whose sum is σ = 80349534612. Its totient is φ = 26783178202.

The previous prime is 53566356379. The next prime is 53566356413. The reversal of 53566356406 is 60465366535.

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

It is a super-2 number, since 2×53566356406² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 53566356406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13391589100 + ... + 13391589103.

It is an arithmetic number, because the mean of its divisors is an integer number (20087383653).

Almost surely, 2^53566356406 is an apocalyptic number.

53566356406 is a deficient number, since it is larger than the sum of its proper divisors (26783178206).

53566356406 is a wasteful number, since it uses less digits than its factorization.

53566356406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26783178205.

The product of its (nonzero) digits is 5832000, while the sum is 49.

The spelling of 53566356406 in words is "fifty-three billion, five hundred sixty-six million, three hundred fifty-six thousand, four hundred six".