201878060613226 has 4 divisors (see below), whose sum is σ = 302817090919842. Its totient is φ = 100939030306612.

The previous prime is 201878060613221. The next prime is 201878060613227. The reversal of 201878060613226 is 622316060878102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 198183073218001 + 3694987395225 = 14077751^2 + 1922235^2 .

It is a super-2 number, since 2×201878060613226² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201878060613221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50469515153305 + ... + 50469515153308.

Almost surely, 2^{201878060613226} is an apocalyptic number.

201878060613226 is a deficient number, since it is larger than the sum of its proper divisors (100939030306616).

201878060613226 is a wasteful number, since it uses less digits than its factorization.

201878060613226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100939030306615.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 201878060613226 in words is "two hundred one trillion, eight hundred seventy-eight billion, sixty million, six hundred thirteen thousand, two hundred twenty-six".