355133433421 has 8 divisors (see below), whose sum is σ = 382456027800. Its totient is φ = 327811501632.

The previous prime is 355133433409. The next prime is 355133433467. The reversal of 355133433421 is 124334331553.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5604169321 + 349529264100 = 74861^2 + 591210^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 355133433421 - 2²⁵ = 355099878989 is a prime.

It is a super-2 number, since 2×355133433421² (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 (355133433401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1923255 + ... + 2099803.

It is an arithmetic number, because the mean of its divisors is an integer number (47807003475).

Almost surely, 2^355133433421 is an apocalyptic number.

It is an amenable number.

355133433421 is a deficient number, since it is larger than the sum of its proper divisors (27322594379).

355133433421 is a wasteful number, since it uses less digits than its factorization.

355133433421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331295.

The product of its digits is 194400, while the sum is 37.

Adding to 355133433421 its reverse (124334331553), we get a palindrome (479467764974).

The spelling of 355133433421 in words is "three hundred fifty-five billion, one hundred thirty-three million, four hundred thirty-three thousand, four hundred twenty-one".