28723348981801 has 16 divisors (see below), whose sum is σ = 29514283142400. Its totient is φ = 27936726364800.

The previous prime is 28723348981783. The next prime is 28723348981819. The reversal of 28723348981801 is 10818984332782.

It is an interprime number because it is at equal distance from previous prime (28723348981783) and next prime (28723348981819).

It is a cyclic number.

It is not a de Polignac number, because 28723348981801 - 2⁹ = 28723348981289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28723348981871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365821335 + ... + 365899843.

It is an arithmetic number, because the mean of its divisors is an integer number (1844642696400).

Almost surely, 2^{28723348981801} is an apocalyptic number.

It is an amenable number.

28723348981801 is a deficient number, since it is larger than the sum of its proper divisors (790934160599).

28723348981801 is a wasteful number, since it uses less digits than its factorization.

28723348981801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105840.

The product of its (nonzero) digits is 37158912, while the sum is 64.

The spelling of 28723348981801 in words is "twenty-eight trillion, seven hundred twenty-three billion, three hundred forty-eight million, nine hundred eighty-one thousand, eight hundred one".