431616619655 has 24 divisors (see below), whose sum is σ = 585230855328. Its totient is φ = 304874334336.

The previous prime is 431616619631. The next prime is 431616619673. The reversal of 431616619655 is 556916616134.

It is not a de Polignac number, because 431616619655 - 2¹⁸ = 431616357511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431616619597 and 431616619606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11084672 + ... + 11123541.

It is an arithmetic number, because the mean of its divisors is an integer number (24384618972).

Almost surely, 2^431616619655 is an apocalyptic number.

431616619655 is a deficient number, since it is larger than the sum of its proper divisors (153614235673).

431616619655 is a wasteful number, since it uses less digits than its factorization.

431616619655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22208267 (or 22208254 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 53.

The spelling of 431616619655 in words is "four hundred thirty-one billion, six hundred sixteen million, six hundred nineteen thousand, six hundred fifty-five".