28081455801 has 32 divisors (see below), whose sum is σ = 43864104960. Its totient is φ = 15646598976.

The previous prime is 28081455767. The next prime is 28081455811. The reversal of 28081455801 is 10855418082.

It is not a de Polignac number, because 28081455801 - 2⁶ = 28081455737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28081455811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212620 + ... + 318386.

It is an arithmetic number, because the mean of its divisors is an integer number (1370753280).

Almost surely, 2^28081455801 is an apocalyptic number.

28081455801 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28081455801 is a deficient number, since it is larger than the sum of its proper divisors (15782649159).

28081455801 is a wasteful number, since it uses less digits than its factorization.

28081455801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106093.

The product of its (nonzero) digits is 102400, while the sum is 42.

The spelling of 28081455801 in words is "twenty-eight billion, eighty-one million, four hundred fifty-five thousand, eight hundred one".