136621442012 has 24 divisors (see below), whose sum is σ = 260881335792. Its totient is φ = 62086707200.

The previous prime is 136621441997. The next prime is 136621442029. The reversal of 136621442012 is 210244126631.

It is a self number, because there is not a number n which added to its sum of digits gives 136621442012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149303 + ... + 543630.

It is an arithmetic number, because the mean of its divisors is an integer number (10870055658).

Almost surely, 2^136621442012 is an apocalyptic number.

It is an amenable number.

136621442012 is a deficient number, since it is larger than the sum of its proper divisors (124259893780).

136621442012 is a wasteful number, since it uses less digits than its factorization.

136621442012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697429 (or 697427 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 136621442012 its reverse (210244126631), we get a palindrome (346865568643).

The spelling of 136621442012 in words is "one hundred thirty-six billion, six hundred twenty-one million, four hundred forty-two thousand, twelve".