623412064165521 has 8 divisors (see below), whose sum is σ = 831306034307104. Its totient is φ = 415563068400480.

The previous prime is 623412064165519. The next prime is 623412064165559. The reversal of 623412064165521 is 125561460214326.

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

It is not a de Polignac number, because 623412064165521 - 2¹ = 623412064165519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623412064167521) 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, 11243561791 + ... + 11243617236.

It is an arithmetic number, because the mean of its divisors is an integer number (103913254288388).

Almost surely, 2^{623412064165521} is an apocalyptic number.

It is an amenable number.

623412064165521 is a deficient number, since it is larger than the sum of its proper divisors (207893970141583).

623412064165521 is a wasteful number, since it uses less digits than its factorization.

623412064165521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22487188271.

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 623412064165521 in words is "six hundred twenty-three trillion, four hundred twelve billion, sixty-four million, one hundred sixty-five thousand, five hundred twenty-one".