351773666874 has 144 divisors (see below), whose sum is σ = 911715379848. Its totient is φ = 97667990784.

The previous prime is 351773666873. The next prime is 351773666887. The reversal of 351773666874 is 478666377153.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 215681292225 + 136092374649 = 464415^2 + 368907^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (351773666873) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 27830484 + ... + 27843120.

Almost surely, 2^351773666874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351773666874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455857689924).

351773666874 is an abundant number, since it is smaller than the sum of its proper divisors (559941712974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

351773666874 is a wasteful number, since it uses less digits than its factorization.

351773666874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13549 (or 13539 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 63.

The spelling of 351773666874 in words is "three hundred fifty-one billion, seven hundred seventy-three million, six hundred sixty-six thousand, eight hundred seventy-four".