236648142009 has 12 divisors (see below), whose sum is σ = 349774515376. Its totient is φ = 154096464312.

The previous prime is 236648141971. The next prime is 236648142043. The reversal of 236648142009 is 900241846632.

236648142009 is a `hidden beast` number, since 2 + 366 + 4 + 81 + 4 + 200 + 9 = 666.

It is not a de Polignac number, because 236648142009 - 2¹⁹ = 236647617721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (236638142009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305746567 + ... + 305747340.

Almost surely, 2^236648142009 is an apocalyptic number.

It is an amenable number.

236648142009 is a deficient number, since it is larger than the sum of its proper divisors (113126373367).

236648142009 is a wasteful number, since it uses less digits than its factorization.

236648142009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611493956 (or 611493953 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 236648142009 in words is "two hundred thirty-six billion, six hundred forty-eight million, one hundred forty-two thousand, nine".