203793561408 has 56 divisors (see below), whose sum is σ = 549377481888. Its totient is φ = 66649463296.

The previous prime is 203793561403. The next prime is 203793561457. The reversal of 203793561408 is 804165397302.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203793561403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10003266 + ... + 10023617.

It is a 1-persistent number, because it is pandigital, but 2⋅203793561408 = 407587122816 is not.

Almost surely, 2^203793561408 is an apocalyptic number.

It is an amenable number.

203793561408 is an abundant number, since it is smaller than the sum of its proper divisors (345583920480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203793561408 is a wasteful number, since it uses less digits than its factorization.

203793561408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20026951 (or 20026941 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 203793561408 in words is "two hundred three billion, seven hundred ninety-three million, five hundred sixty-one thousand, four hundred eight".