100001610557 has 4 divisors (see below), whose sum is σ = 100323159456. Its totient is φ = 99680061660.

The previous prime is 100001610551. The next prime is 100001610581. The reversal of 100001610557 is 755016100001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 755016100001 = 117497 ⋅6425833.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100001610557 is a prime.

It is a super-2 number, since 2×100001610557² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001610551) 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, 160773983 + ... + 160774604.

It is an arithmetic number, because the mean of its divisors is an integer number (25080789864).

Almost surely, 2^100001610557 is an apocalyptic number.

It is an amenable number.

100001610557 is a deficient number, since it is larger than the sum of its proper divisors (321548899).

100001610557 is an equidigital number, since it uses as much as digits as its factorization.

100001610557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321548898.

The product of its (nonzero) digits is 1050, while the sum is 26.

Adding to 100001610557 its reverse (755016100001), we get a palindrome (855017710558).

The spelling of 100001610557 in words is "one hundred billion, one million, six hundred ten thousand, five hundred fifty-seven".