15894851461 has 2 divisors, whose sum is σ = 15894851462. Its totient is φ = 15894851460.

The previous prime is 15894851459. The next prime is 15894851473. The reversal of 15894851461 is 16415849851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13480603236 + 2414248225 = 116106^2 + 49135^2 .

It is an emirp because it is prime and its reverse (16415849851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15894851461 - 2¹ = 15894851459 is a prime.

Together with 15894851459, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 15894851399 and 15894851408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15894851491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7947425730 + 7947425731.

It is an arithmetic number, because the mean of its divisors is an integer number (7947425731).

Almost surely, 2^15894851461 is an apocalyptic number.

It is an amenable number.

15894851461 is a deficient number, since it is larger than the sum of its proper divisors (1).

15894851461 is an equidigital number, since it uses as much as digits as its factorization.

15894851461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1382400, while the sum is 52.

The spelling of 15894851461 in words is "fifteen billion, eight hundred ninety-four million, eight hundred fifty-one thousand, four hundred sixty-one".