623412521209 has 8 divisors (see below), whose sum is σ = 660228461568. Its totient is φ = 586612649280.

The previous prime is 623412521167. The next prime is 623412521231. The reversal of 623412521209 is 902125214326.

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 623412521209 - 2²¹ = 623410424057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623412521309) 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, 3937177 + ... + 4092454.

It is an arithmetic number, because the mean of its divisors is an integer number (82528557696).

Almost surely, 2^623412521209 is an apocalyptic number.

It is an amenable number.

623412521209 is a deficient number, since it is larger than the sum of its proper divisors (36815940359).

623412521209 is a wasteful number, since it uses less digits than its factorization.

623412521209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8034215.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 623412521209 in words is "six hundred twenty-three billion, four hundred twelve million, five hundred twenty-one thousand, two hundred nine".