203406472801 has 16 divisors (see below), whose sum is σ = 246548291328. Its totient is φ = 164034129600.

The previous prime is 203406472783. The next prime is 203406472849. The reversal of 203406472801 is 108274604302.

It is a cyclic number.

It is not a de Polignac number, because 203406472801 - 2¹⁹ = 203405948513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203406473801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10345870 + ... + 10365511.

It is an arithmetic number, because the mean of its divisors is an integer number (15409268208).

Almost surely, 2^203406472801 is an apocalyptic number.

It is an amenable number.

203406472801 is a deficient number, since it is larger than the sum of its proper divisors (43141818527).

203406472801 is a wasteful number, since it uses less digits than its factorization.

203406472801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20711472.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 203406472801 in words is "two hundred three billion, four hundred six million, four hundred seventy-two thousand, eight hundred one".