201161778814 has 8 divisors (see below), whose sum is σ = 302551630920. Its totient is φ = 100311235176.

The previous prime is 201161778761. The next prime is 201161778823. The reversal of 201161778814 is 418877161102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×201161778814² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134826184 + ... + 134827675.

It is an arithmetic number, because the mean of its divisors is an integer number (37818953865).

Almost surely, 2^201161778814 is an apocalyptic number.

201161778814 is a deficient number, since it is larger than the sum of its proper divisors (101389852106).

201161778814 is a wasteful number, since it uses less digits than its factorization.

201161778814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269654234.

The product of its (nonzero) digits is 150528, while the sum is 46.

The spelling of 201161778814 in words is "two hundred one billion, one hundred sixty-one million, seven hundred seventy-eight thousand, eight hundred fourteen".