1216961720074 has 32 divisors (see below), whose sum is σ = 1926549979200. Its totient is φ = 574946760960.

The previous prime is 1216961719997. The next prime is 1216961720081. The reversal of 1216961720074 is 4700271696121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119999044 + ... + 120009184.

It is an arithmetic number, because the mean of its divisors is an integer number (60204686850).

Almost surely, 2^{1216961720074} is an apocalyptic number.

1216961720074 is a deficient number, since it is larger than the sum of its proper divisors (709588259126).

1216961720074 is a wasteful number, since it uses less digits than its factorization.

1216961720074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18118.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 1216961720074 in words is "one trillion, two hundred sixteen billion, nine hundred sixty-one million, seven hundred twenty thousand, seventy-four".