623447425478145 has 8 divisors (see below), whose sum is σ = 997515880765056. Its totient is φ = 332505293588336.

The previous prime is 623447425478093. The next prime is 623447425478203. The reversal of 623447425478145 is 541874524744326.

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

It is a cyclic number.

It is not a de Polignac number, because 623447425478145 - 2⁶ = 623447425478081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20781580849257 + ... + 20781580849286.

It is an arithmetic number, because the mean of its divisors is an integer number (124689485095632).

Almost surely, 2^{623447425478145} is an apocalyptic number.

It is an amenable number.

623447425478145 is a deficient number, since it is larger than the sum of its proper divisors (374068455286911).

623447425478145 is a wasteful number, since it uses less digits than its factorization.

623447425478145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41563161698551.

The product of its digits is 722534400, while the sum is 66.

The spelling of 623447425478145 in words is "six hundred twenty-three trillion, four hundred forty-seven billion, four hundred twenty-five million, four hundred seventy-eight thousand, one hundred forty-five".