28815161211643 has 2 divisors, whose sum is σ = 28815161211644. Its totient is φ = 28815161211642.

The previous prime is 28815161211637. The next prime is 28815161211649. The reversal of 28815161211643 is 34611216151882.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (28815161211637) and next prime (28815161211649).

It is a cyclic number.

It is not a de Polignac number, because 28815161211643 - 2²¹ = 28815159114491 is a prime.

It is not a weakly prime, because it can be changed into another prime (28815161211649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14407580605821 + 14407580605822.

It is an arithmetic number, because the mean of its divisors is an integer number (14407580605822).

Almost surely, 2^{28815161211643} is an apocalyptic number.

28815161211643 is a deficient number, since it is larger than the sum of its proper divisors (1).

28815161211643 is an equidigital number, since it uses as much as digits as its factorization.

28815161211643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 49.

The spelling of 28815161211643 in words is "twenty-eight trillion, eight hundred fifteen billion, one hundred sixty-one million, two hundred eleven thousand, six hundred forty-three".