353942475021 has 6 divisors (see below), whose sum is σ = 511250241710. Its totient is φ = 235961650008.

The previous prime is 353942474989. The next prime is 353942475031. The reversal of 353942475021 is 120574249353.

It is a happy number.

353942475021 is a `hidden beast` number, since 3 + 53 + 94 + 2 + 4 + 7 + 502 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 287525453796 + 66417021225 = 536214^2 + 257715^2 .

It is not a de Polignac number, because 353942475021 - 2⁵ = 353942474989 is a prime.

It is a super-3 number, since 3×353942475021³ (a number of 36 digits) contains 333 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 (353942475031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19663470826 + ... + 19663470843.

Almost surely, 2^353942475021 is an apocalyptic number.

It is an amenable number.

353942475021 is a deficient number, since it is larger than the sum of its proper divisors (157307766689).

353942475021 is a wasteful number, since it uses less digits than its factorization.

353942475021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39326941675 (or 39326941672 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 353942475021 in words is "three hundred fifty-three billion, nine hundred forty-two million, four hundred seventy-five thousand, twenty-one".