139816126466 has 16 divisors (see below), whose sum is σ = 218892994488. Its totient is φ = 66916137600.

The previous prime is 139816126451. The next prime is 139816126487. The reversal of 139816126466 is 664621618931.

It can be written as a sum of positive squares in 4 ways, for example, as 112172076241 + 27644050225 = 334921^2 + 166265^2 .

It is a super-3 number, since 3×139816126466³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

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, 16081265 + ... + 16089956.

Almost surely, 2^139816126466 is an apocalyptic number.

139816126466 is a deficient number, since it is larger than the sum of its proper divisors (79076868022).

139816126466 is a wasteful number, since it uses less digits than its factorization.

139816126466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32171317.

The product of its digits is 2239488, while the sum is 53.

The spelling of 139816126466 in words is "one hundred thirty-nine billion, eight hundred sixteen million, one hundred twenty-six thousand, four hundred sixty-six".