1223678980739 has 16 divisors (see below), whose sum is σ = 1295099520000. Its totient is φ = 1152967828320.

The previous prime is 1223678980723. The next prime is 1223678980747. The reversal of 1223678980739 is 9370898763221.

It is not a de Polignac number, because 1223678980739 - 2⁴ = 1223678980723 is a prime.

It is a super-2 number, since 2×1223678980739² (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 (1223678980339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5622062 + ... + 5835660.

It is an arithmetic number, because the mean of its divisors is an integer number (80943720000).

Almost surely, 2^{1223678980739} is an apocalyptic number.

1223678980739 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1223678980739 is a deficient number, since it is larger than the sum of its proper divisors (71420539261).

1223678980739 is a wasteful number, since it uses less digits than its factorization.

1223678980739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215258.

The product of its (nonzero) digits is 54867456, while the sum is 65.

The spelling of 1223678980739 in words is "one trillion, two hundred twenty-three billion, six hundred seventy-eight million, nine hundred eighty thousand, seven hundred thirty-nine".