100318988593 has 4 divisors (see below), whose sum is σ = 100320116260. Its totient is φ = 100317860928.

The previous prime is 100318988557. The next prime is 100318988597. The reversal of 100318988593 is 395889813001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 395889813001 = 251 ⋅1577250251.

It can be written as a sum of positive squares in 2 ways, for example, as 51137942769 + 49181045824 = 226137^2 + 221768^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100318988593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100318988597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417780 + ... + 612517.

It is an arithmetic number, because the mean of its divisors is an integer number (25080029065).

Almost surely, 2^100318988593 is an apocalyptic number.

It is an amenable number.

100318988593 is a deficient number, since it is larger than the sum of its proper divisors (1127667).

100318988593 is an equidigital number, since it uses as much as digits as its factorization.

100318988593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127666.

The product of its (nonzero) digits is 1866240, while the sum is 55.

The spelling of 100318988593 in words is "one hundred billion, three hundred eighteen million, nine hundred eighty-eight thousand, five hundred ninety-three".