203453536641 has 16 divisors (see below), whose sum is σ = 280051742208. Its totient is φ = 131246438400.

The previous prime is 203453536633. The next prime is 203453536667. The reversal of 203453536641 is 146635354302.

It is not a de Polignac number, because 203453536641 - 2³ = 203453536633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203453536593 and 203453536602.

It is not an unprimeable number, because it can be changed into a prime (203453536841) 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, 805731 + ... + 1027671.

It is an arithmetic number, because the mean of its divisors is an integer number (17503233888).

Almost surely, 2^203453536641 is an apocalyptic number.

It is an amenable number.

203453536641 is a deficient number, since it is larger than the sum of its proper divisors (76598205567).

203453536641 is a wasteful number, since it uses less digits than its factorization.

203453536641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231832.

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 203453536641 in words is "two hundred three billion, four hundred fifty-three million, five hundred thirty-six thousand, six hundred forty-one".