11515101251 has 2 divisors, whose sum is σ = 11515101252. Its totient is φ = 11515101250.

The previous prime is 11515101217. The next prime is 11515101277. The reversal of 11515101251 is 15210151511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11515101251 - 2²² = 11510906947 is a prime.

It is not a weakly prime, because it can be changed into another prime (11515101281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5757550625 + 5757550626.

It is an arithmetic number, because the mean of its divisors is an integer number (5757550626).

Almost surely, 2^11515101251 is an apocalyptic number.

11515101251 is a deficient number, since it is larger than the sum of its proper divisors (1).

11515101251 is an equidigital number, since it uses as much as digits as its factorization.

11515101251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250, while the sum is 23.

Adding to 11515101251 its reverse (15210151511), we get a palindrome (26725252762).

The spelling of 11515101251 in words is "eleven billion, five hundred fifteen million, one hundred one thousand, two hundred fifty-one".