15001351381 has 2 divisors, whose sum is σ = 15001351382. Its totient is φ = 15001351380.

The previous prime is 15001351363. The next prime is 15001351427. The reversal of 15001351381 is 18315310051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11061780625 + 3939570756 = 105175^2 + 62766^2 .

It is a cyclic number.

It is not a de Polignac number, because 15001351381 - 2¹¹ = 15001349333 is a prime.

It is a super-2 number, since 2×15001351381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15001351481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7500675690 + 7500675691.

It is an arithmetic number, because the mean of its divisors is an integer number (7500675691).

Almost surely, 2^15001351381 is an apocalyptic number.

It is an amenable number.

15001351381 is a deficient number, since it is larger than the sum of its proper divisors (1).

15001351381 is an equidigital number, since it uses as much as digits as its factorization.

15001351381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 15001351381 in words is "fifteen billion, one million, three hundred fifty-one thousand, three hundred eighty-one".