203405610161602 has 32 divisors (see below), whose sum is σ = 328692511825920. Its totient is φ = 94093072249680.

The previous prime is 203405610161519. The next prime is 203405610161629. The reversal of 203405610161602 is 206161016504302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1285498 + ... + 20210485.

It is an arithmetic number, because the mean of its divisors is an integer number (10271640994560).

Almost surely, 2^{203405610161602} is an apocalyptic number.

203405610161602 is a deficient number, since it is larger than the sum of its proper divisors (125286901664318).

203405610161602 is a wasteful number, since it uses less digits than its factorization.

203405610161602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21501838.

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 203405610161602 its reverse (206161016504302), we get a palindrome (409566626665904).

The spelling of 203405610161602 in words is "two hundred three trillion, four hundred five billion, six hundred ten million, one hundred sixty-one thousand, six hundred two".