346900172621 has 4 divisors (see below), whose sum is σ = 347612493792. Its totient is φ = 346187851452.

The previous prime is 346900172573. The next prime is 346900172657. The reversal of 346900172621 is 126271009643.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 346900172621 - 2³⁰ = 345826430797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346900172221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356159855 + ... + 356160828.

It is an arithmetic number, because the mean of its divisors is an integer number (86903123448).

Almost surely, 2^346900172621 is an apocalyptic number.

It is an amenable number.

346900172621 is a deficient number, since it is larger than the sum of its proper divisors (712321171).

346900172621 is an equidigital number, since it uses as much as digits as its factorization.

346900172621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712321170.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 346900172621 in words is "three hundred forty-six billion, nine hundred million, one hundred seventy-two thousand, six hundred twenty-one".