351807022081 has 4 divisors (see below), whose sum is σ = 351808298964. Its totient is φ = 351805745200.

The previous prime is 351807022037. The next prime is 351807022111. The reversal of 351807022081 is 180220708153.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 188234499600 + 163572522481 = 433860^2 + 404441^2 .

It is a cyclic number.

It is not a de Polignac number, because 351807022081 - 2⁷ = 351807021953 is a prime.

It is a super-2 number, since 2×351807022081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 351807022081.

It is not an unprimeable number, because it can be changed into a prime (351807022031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35110 + ... + 839551.

It is an arithmetic number, because the mean of its divisors is an integer number (87952074741).

Almost surely, 2^351807022081 is an apocalyptic number.

It is an amenable number.

351807022081 is a deficient number, since it is larger than the sum of its proper divisors (1276883).

351807022081 is an equidigital number, since it uses as much as digits as its factorization.

351807022081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276882.

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 351807022081 in words is "three hundred fifty-one billion, eight hundred seven million, twenty-two thousand, eighty-one".