15001227881 has 2 divisors, whose sum is σ = 15001227882. Its totient is φ = 15001227880.

The previous prime is 15001227869. The next prime is 15001227883. The reversal of 15001227881 is 18872210051.

15001227881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11881000000 + 3120227881 = 109000^2 + 55859^2 .

It is a cyclic number.

It is not a de Polignac number, because 15001227881 - 2¹⁰ = 15001226857 is a prime.

It is a super-2 number, since 2×15001227881² (a number of 21 digits) contains 22 as substring.

Together with 15001227883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15001227883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7500613940 + 7500613941.

It is an arithmetic number, because the mean of its divisors is an integer number (7500613941).

Almost surely, 2^15001227881 is an apocalyptic number.

It is an amenable number.

15001227881 is a deficient number, since it is larger than the sum of its proper divisors (1).

15001227881 is an equidigital number, since it uses as much as digits as its factorization.

15001227881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 35.

The spelling of 15001227881 in words is "fifteen billion, one million, two hundred twenty-seven thousand, eight hundred eighty-one".