1216272746377 has 16 divisors (see below), whose sum is σ = 1320852294720. Its totient is φ = 1113287055552.

The previous prime is 1216272746363. The next prime is 1216272746383. The reversal of 1216272746377 is 7736472726121.

It is a cyclic number.

It is not a de Polignac number, because 1216272746377 - 2¹⁵ = 1216272713609 is a prime.

It is a super-2 number, since 2×1216272746377² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1216272746317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1087443 + ... + 1901335.

It is an arithmetic number, because the mean of its divisors is an integer number (82553268420).

Almost surely, 2^{1216272746377} is an apocalyptic number.

It is an amenable number.

1216272746377 is a deficient number, since it is larger than the sum of its proper divisors (104579548343).

1216272746377 is a wasteful number, since it uses less digits than its factorization.

1216272746377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814872.

The product of its digits is 8297856, while the sum is 55.

The spelling of 1216272746377 in words is "one trillion, two hundred sixteen billion, two hundred seventy-two million, seven hundred forty-six thousand, three hundred seventy-seven".