121611646234432 has 14 divisors (see below), whose sum is σ = 241323110496578. Its totient is φ = 60805823117184.

The previous prime is 121611646234417. The next prime is 121611646234459. The reversal of 121611646234432 is 234432646116121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 119350905446656 + 2260740787776 = 10924784^2 + 1503576^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950090986143 + ... + 950090986270.

Almost surely, 2^{121611646234432} is an apocalyptic number.

It is an amenable number.

121611646234432 is a deficient number, since it is larger than the sum of its proper divisors (119711464262146).

121611646234432 is an equidigital number, since it uses as much as digits as its factorization.

121611646234432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900181972425 (or 1900181972415 counting only the distinct ones).

The product of its digits is 995328, while the sum is 46.

The spelling of 121611646234432 in words is "one hundred twenty-one trillion, six hundred eleven billion, six hundred forty-six million, two hundred thirty-four thousand, four hundred thirty-two".