1042664616655 has 4 divisors (see below), whose sum is σ = 1251197539992. Its totient is φ = 834131693320.

The previous prime is 1042664616647. The next prime is 1042664616731. The reversal of 1042664616655 is 5566164662401.

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

It is not a de Polignac number, because 1042664616655 - 2³ = 1042664616647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104266461661 + ... + 104266461670.

It is an arithmetic number, because the mean of its divisors is an integer number (312799384998).

Almost surely, 2^{1042664616655} is an apocalyptic number.

1042664616655 is a deficient number, since it is larger than the sum of its proper divisors (208532923337).

1042664616655 is an equidigital number, since it uses as much as digits as its factorization.

1042664616655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208532923336.

The product of its (nonzero) digits is 6220800, while the sum is 52.

The spelling of 1042664616655 in words is "one trillion, forty-two billion, six hundred sixty-four million, six hundred sixteen thousand, six hundred fifty-five".