205098233878 has 4 divisors (see below), whose sum is σ = 307647350820. Its totient is φ = 102549116938.

The previous prime is 205098233803. The next prime is 205098233911. The reversal of 205098233878 is 878332890502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 878332890502 = 2 ⋅439166445251.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51274558468 + ... + 51274558471.

It is an arithmetic number, because the mean of its divisors is an integer number (76911837705).

Almost surely, 2^205098233878 is an apocalyptic number.

205098233878 is a deficient number, since it is larger than the sum of its proper divisors (102549116942).

205098233878 is a wasteful number, since it uses less digits than its factorization.

205098233878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102549116941.

The product of its (nonzero) digits is 5806080, while the sum is 55.

It can be divided in two parts, 205098 and 233878, that added together give a cube (438976 = 76³).

The spelling of 205098233878 in words is "two hundred five billion, ninety-eight million, two hundred thirty-three thousand, eight hundred seventy-eight".