1379756921773 has 16 divisors (see below), whose sum is σ = 1461967206336. Its totient is φ = 1297663525120.

The previous prime is 1379756921737. The next prime is 1379756921819. The reversal of 1379756921773 is 3771296579731.

It is a cyclic number.

It is not a de Polignac number, because 1379756921773 - 2³³ = 1371166987181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1379756921699 and 1379756921708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379756928773) 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, 225042918 + ... + 225049048.

It is an arithmetic number, because the mean of its divisors is an integer number (91372950396).

Almost surely, 2^{1379756921773} is an apocalyptic number.

It is an amenable number.

1379756921773 is a deficient number, since it is larger than the sum of its proper divisors (82210284563).

1379756921773 is a wasteful number, since it uses less digits than its factorization.

1379756921773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13484.

The product of its digits is 105019740, while the sum is 67.

The spelling of 1379756921773 in words is "one trillion, three hundred seventy-nine billion, seven hundred fifty-six million, nine hundred twenty-one thousand, seven hundred seventy-three".