357521821612 has 12 divisors (see below), whose sum is σ = 625681762216. Its totient is φ = 178755603840.

The previous prime is 357521821583. The next prime is 357521821619. The reversal of 357521821612 is 216128125753.

It is a super-3 number, since 3×357521821612³ (a number of 36 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (357521821619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1173189 + ... + 1446172.

Almost surely, 2^357521821612 is an apocalyptic number.

It is an amenable number.

357521821612 is a deficient number, since it is larger than the sum of its proper divisors (268159940604).

357521821612 is a wasteful number, since it uses less digits than its factorization.

357521821612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653488 (or 2653486 counting only the distinct ones).

The product of its digits is 201600, while the sum is 43.

The spelling of 357521821612 in words is "three hundred fifty-seven billion, five hundred twenty-one million, eight hundred twenty-one thousand, six hundred twelve".