205672023403 has 16 divisors (see below), whose sum is σ = 269918173440. Its totient is φ = 151828970400.

The previous prime is 205672023341. The next prime is 205672023407. The reversal of 205672023403 is 304320276502.

It is a cyclic number.

It is not a de Polignac number, because 205672023403 - 2¹⁷ = 205671892331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205672023407) 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, 70289728 + ... + 70292653.

It is an arithmetic number, because the mean of its divisors is an integer number (16869885840).

Almost surely, 2^205672023403 is an apocalyptic number.

205672023403 is a deficient number, since it is larger than the sum of its proper divisors (64246150037).

205672023403 is a wasteful number, since it uses less digits than its factorization.

205672023403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140582418.

The product of its (nonzero) digits is 60480, while the sum is 34.

Adding to 205672023403 its reverse (304320276502), we get a palindrome (509992299905).

The spelling of 205672023403 in words is "two hundred five billion, six hundred seventy-two million, twenty-three thousand, four hundred three".