356109022181 has 24 divisors (see below), whose sum is σ = 398236013280. Its totient is φ = 315802216800.

The previous prime is 356109022177. The next prime is 356109022189. The reversal of 356109022181 is 181220901653.

It is a happy number.

It is not a de Polignac number, because 356109022181 - 2² = 356109022177 is a prime.

It is a super-2 number, since 2×356109022181² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (356109022189) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16484135 + ... + 16505723.

It is an arithmetic number, because the mean of its divisors is an integer number (16593167220).

Almost surely, 2^356109022181 is an apocalyptic number.

It is an amenable number.

356109022181 is a deficient number, since it is larger than the sum of its proper divisors (42126991099).

356109022181 is a wasteful number, since it uses less digits than its factorization.

356109022181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22497 (or 22454 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 356109022181 in words is "three hundred fifty-six billion, one hundred nine million, twenty-two thousand, one hundred eighty-one".