406555661553 has 8 divisors (see below), whose sum is σ = 565642659648. Its totient is φ = 259252885584.

The previous prime is 406555661497. The next prime is 406555661557. The reversal of 406555661553 is 355166555604.

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

It is not a de Polignac number, because 406555661553 - 2¹² = 406555657457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 406555661496 and 406555661505.

It is not an unprimeable number, because it can be changed into a prime (406555661557) 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, 2946055450 + ... + 2946055587.

It is an arithmetic number, because the mean of its divisors is an integer number (70705332456).

Almost surely, 2^406555661553 is an apocalyptic number.

It is an amenable number.

406555661553 is a deficient number, since it is larger than the sum of its proper divisors (159086998095).

406555661553 is a wasteful number, since it uses less digits than its factorization.

406555661553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5892111063.

The product of its (nonzero) digits is 8100000, while the sum is 51.

The spelling of 406555661553 in words is "four hundred six billion, five hundred fifty-five million, six hundred sixty-one thousand, five hundred fifty-three".