1380681104779 has 4 divisors (see below), whose sum is σ = 1380722180040. Its totient is φ = 1380640029520.

The previous prime is 1380681104771. The next prime is 1380681104797. The reversal of 1380681104779 is 9774011860831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1380681104779 - 2³ = 1380681104771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380681104771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20487169 + ... + 20554450.

It is an arithmetic number, because the mean of its divisors is an integer number (345180545010).

Almost surely, 2^{1380681104779} is an apocalyptic number.

1380681104779 is a deficient number, since it is larger than the sum of its proper divisors (41075261).

1380681104779 is an equidigital number, since it uses as much as digits as its factorization.

1380681104779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41075260.

The product of its (nonzero) digits is 2032128, while the sum is 55.

The spelling of 1380681104779 in words is "one trillion, three hundred eighty billion, six hundred eighty-one million, one hundred four thousand, seven hundred seventy-nine".