203890761113 has 16 divisors (see below), whose sum is σ = 225060365712. Its totient is φ = 183510144000.

The previous prime is 203890761079. The next prime is 203890761203. The reversal of 203890761113 is 311167098302.

It can be written as a sum of positive squares in 8 ways, for example, as 142135032064 + 61755729049 = 377008^2 + 248507^2 .

It is a cyclic number.

It is not a de Polignac number, because 203890761113 - 2¹⁰ = 203890760089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (203890761313) 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, 818093 + ... + 1037813.

It is an arithmetic number, because the mean of its divisors is an integer number (14066272857).

Almost surely, 2^203890761113 is an apocalyptic number.

It is an amenable number.

203890761113 is a deficient number, since it is larger than the sum of its proper divisors (21169604599).

203890761113 is a wasteful number, since it uses less digits than its factorization.

203890761113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221516.

The product of its (nonzero) digits is 54432, while the sum is 41.

The spelling of 203890761113 in words is "two hundred three billion, eight hundred ninety million, seven hundred sixty-one thousand, one hundred thirteen".