351623324421 has 48 divisors (see below), whose sum is σ = 560681472000. Its totient is φ = 211354409376.

The previous prime is 351623324399. The next prime is 351623324443. The reversal of 351623324421 is 124423326153.

351623324421 is a `hidden beast` number, since 3 + 5 + 1 + 623 + 3 + 2 + 4 + 4 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (351623324399) and next prime (351623324443).

It is not a de Polignac number, because 351623324421 - 2¹⁵ = 351623291653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351623324491) 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 47 ways as a sum of consecutive naturals, for example, 558036 + ... + 1007298.

It is an arithmetic number, because the mean of its divisors is an integer number (11680864000).

Almost surely, 2^351623324421 is an apocalyptic number.

It is an amenable number.

351623324421 is a deficient number, since it is larger than the sum of its proper divisors (209058147579).

351623324421 is a wasteful number, since it uses less digits than its factorization.

351623324421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449510 (or 449507 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The spelling of 351623324421 in words is "three hundred fifty-one billion, six hundred twenty-three million, three hundred twenty-four thousand, four hundred twenty-one".