11451954251 has 2 divisors, whose sum is σ = 11451954252. Its totient is φ = 11451954250.

The previous prime is 11451954233. The next prime is 11451954271. The reversal of 11451954251 is 15245915411.

It is a weak prime.

It is an emirp because it is prime and its reverse (15245915411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11451954251 is a prime.

It is a super-3 number, since 3×11451954251³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (11451954211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5725977125 + 5725977126.

It is an arithmetic number, because the mean of its divisors is an integer number (5725977126).

Almost surely, 2^11451954251 is an apocalyptic number.

11451954251 is a deficient number, since it is larger than the sum of its proper divisors (1).

11451954251 is an equidigital number, since it uses as much as digits as its factorization.

11451954251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 38.

The spelling of 11451954251 in words is "eleven billion, four hundred fifty-one million, nine hundred fifty-four thousand, two hundred fifty-one".