121450955618 has 4 divisors (see below), whose sum is σ = 182176433430. Its totient is φ = 60725477808.

The previous prime is 121450955557. The next prime is 121450955627. The reversal of 121450955618 is 816559054121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 72241075729 + 49209879889 = 268777^2 + 221833^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30362738903 + ... + 30362738906.

Almost surely, 2^121450955618 is an apocalyptic number.

121450955618 is a deficient number, since it is larger than the sum of its proper divisors (60725477812).

121450955618 is an equidigital number, since it uses as much as digits as its factorization.

121450955618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60725477811.

The product of its (nonzero) digits is 432000, while the sum is 47.

The spelling of 121450955618 in words is "one hundred twenty-one billion, four hundred fifty million, nine hundred fifty-five thousand, six hundred eighteen".