2108863428557 has 8 divisors (see below), whose sum is σ = 2130304622784. Its totient is φ = 2087440826688.

The previous prime is 2108863428547. The next prime is 2108863428577. The reversal of 2108863428557 is 7558243688012.

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

It is a cyclic number.

It is not a de Polignac number, because 2108863428557 - 2¹⁰ = 2108863427533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2108863428496 and 2108863428505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2108863428517) 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, 4420028 + ... + 4873845.

It is an arithmetic number, because the mean of its divisors is an integer number (266288077848).

Almost surely, 2^{2108863428557} is an apocalyptic number.

It is an amenable number.

2108863428557 is a deficient number, since it is larger than the sum of its proper divisors (21441194227).

2108863428557 is a wasteful number, since it uses less digits than its factorization.

2108863428557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9296179.

The product of its (nonzero) digits is 25804800, while the sum is 59.

The spelling of 2108863428557 in words is "two trillion, one hundred eight billion, eight hundred sixty-three million, four hundred twenty-eight thousand, five hundred fifty-seven".