11215255157 has 2 divisors, whose sum is σ = 11215255158. Its totient is φ = 11215255156.

The previous prime is 11215255151. The next prime is 11215255241. The reversal of 11215255157 is 75155251211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11210786161 + 4468996 = 105881^2 + 2114^2 .

It is a cyclic number.

It is not a de Polignac number, because 11215255157 - 2²⁶ = 11148146293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11215255151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5607627578 + 5607627579.

It is an arithmetic number, because the mean of its divisors is an integer number (5607627579).

Almost surely, 2^11215255157 is an apocalyptic number.

It is an amenable number.

11215255157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11215255157 is an equidigital number, since it uses as much as digits as its factorization.

11215255157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17500, while the sum is 35.

The spelling of 11215255157 in words is "eleven billion, two hundred fifteen million, two hundred fifty-five thousand, one hundred fifty-seven".