623441666146 has 16 divisors (see below), whose sum is σ = 1007597465784. Its totient is φ = 287599624704.

The previous prime is 623441666093. The next prime is 623441666171. The reversal of 623441666146 is 641666144326.

It can be written as a sum of positive squares in 4 ways, for example, as 469004455921 + 154437210225 = 684839^2 + 392985^2 .

It is a super-2 number, since 2×623441666146² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 623441666146.

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, 5891665 + ... + 5996548.

Almost surely, 2^623441666146 is an apocalyptic number.

623441666146 is a deficient number, since it is larger than the sum of its proper divisors (384155799638).

623441666146 is a wasteful number, since it uses less digits than its factorization.

623441666146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11890245.

The product of its digits is 2985984, while the sum is 49.

The spelling of 623441666146 in words is "six hundred twenty-three billion, four hundred forty-one million, six hundred sixty-six thousand, one hundred forty-six".