1216977774046 has 16 divisors (see below), whose sum is σ = 1832646877776. Its totient is φ = 606095681536.

The previous prime is 1216977774037. The next prime is 1216977774073. The reversal of 1216977774046 is 6404777796121.

It is a congruent number.

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, 19947180 + ... + 20008096.

It is an arithmetic number, because the mean of its divisors is an integer number (114540429861).

Almost surely, 2^{1216977774046} is an apocalyptic number.

1216977774046 is a deficient number, since it is larger than the sum of its proper divisors (615669103730).

1216977774046 is a wasteful number, since it uses less digits than its factorization.

1216977774046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100043.

The product of its (nonzero) digits is 24893568, while the sum is 61.

The spelling of 1216977774046 in words is "one trillion, two hundred sixteen billion, nine hundred seventy-seven million, seven hundred seventy-four thousand, forty-six".