406615442655 has 32 divisors (see below), whose sum is σ = 667569323520. Its totient is φ = 211228133760.

The previous prime is 406615442627. The next prime is 406615442689. The reversal of 406615442655 is 556244516604.

It is a happy number.

It is not a de Polignac number, because 406615442655 - 2¹⁸ = 406615180511 is a prime.

It is a super-2 number, since 2×406615442655² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 646456 + ... + 1109565.

It is an arithmetic number, because the mean of its divisors is an integer number (20861541360).

Almost surely, 2^406615442655 is an apocalyptic number.

406615442655 is a deficient number, since it is larger than the sum of its proper divisors (260953880865).

406615442655 is a wasteful number, since it uses less digits than its factorization.

406615442655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756431.

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 406615442655 in words is "four hundred six billion, six hundred fifteen million, four hundred forty-two thousand, six hundred fifty-five".