11557505101 has 8 divisors (see below), whose sum is σ = 11580811704. Its totient is φ = 11534223360.

The previous prime is 11557505081. The next prime is 11557505123. The reversal of 11557505101 is 10150575511.

It can be written as a sum of positive squares in 4 ways, for example, as 257602500 + 11299902601 = 16050^2 + 106301^2 .

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 11557505101 - 2²³ = 11549116493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11557506101) 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, 1119901 + ... + 1130173.

It is an arithmetic number, because the mean of its divisors is an integer number (1447601463).

Almost surely, 2^11557505101 is an apocalyptic number.

It is an amenable number.

11557505101 is a deficient number, since it is larger than the sum of its proper divisors (23306603).

11557505101 is a wasteful number, since it uses less digits than its factorization.

11557505101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12431.

The product of its (nonzero) digits is 4375, while the sum is 31.

The spelling of 11557505101 in words is "eleven billion, five hundred fifty-seven million, five hundred five thousand, one hundred one".