100000009748857 has 2 divisors, whose sum is σ = 100000009748858. Its totient is φ = 100000009748856.

The previous prime is 100000009748831. The next prime is 100000009748867. The reversal of 100000009748857 is 758847900000001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86294643039081 + 13705366709776 = 9289491^2 + 3702076^2 .

It is a cyclic number.

It is not a de Polignac number, because 100000009748857 - 2²³ = 100000001360249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100000009748857.

It is not a weakly prime, because it can be changed into another prime (100000009748867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000004874428 + 50000004874429.

It is an arithmetic number, because the mean of its divisors is an integer number (50000004874429).

Almost surely, 2^{100000009748857} is an apocalyptic number.

It is an amenable number.

100000009748857 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000009748857 is an equidigital number, since it uses as much as digits as its factorization.

100000009748857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 49.

Adding to 100000009748857 its reverse (758847900000001), we get a palindrome (858847909748858).

The spelling of 100000009748857 in words is "one hundred trillion, nine million, seven hundred forty-eight thousand, eight hundred fifty-seven".