121761304666 has 16 divisors (see below), whose sum is σ = 183473373600. Its totient is φ = 60603612048.

The previous prime is 121761304631. The next prime is 121761304673. The reversal of 121761304666 is 666403167121.

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, 2819545 + ... + 2862403.

It is an arithmetic number, because the mean of its divisors is an integer number (11467085850).

Almost surely, 2^121761304666 is an apocalyptic number.

121761304666 is a deficient number, since it is larger than the sum of its proper divisors (61712068934).

121761304666 is a wasteful number, since it uses less digits than its factorization.

121761304666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49293.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 121761304666 in words is "one hundred twenty-one billion, seven hundred sixty-one million, three hundred four thousand, six hundred sixty-six".