203347742355 has 48 divisors (see below), whose sum is σ = 365646109920. Its totient is φ = 108415853568.

The previous prime is 203347742327. The next prime is 203347742357. The reversal of 203347742355 is 553247743302.

203347742355 is a `hidden beast` number, since 2 + 0 + 3 + 347 + 74 + 235 + 5 = 666.

It is not a de Polignac number, because 203347742355 - 2⁹ = 203347741843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 203347742355.

It is not an unprimeable number, because it can be changed into a prime (203347742357) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3823929 + ... + 3876741.

It is an arithmetic number, because the mean of its divisors is an integer number (7617627290).

Almost surely, 2^203347742355 is an apocalyptic number.

203347742355 is a deficient number, since it is larger than the sum of its proper divisors (162298367565).

203347742355 is an equidigital number, since it uses as much as digits as its factorization.

203347742355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56002 (or 55990 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 45.

The spelling of 203347742355 in words is "two hundred three billion, three hundred forty-seven million, seven hundred forty-two thousand, three hundred fifty-five".