1977012111359 has 4 divisors (see below), whose sum is σ = 1977249998640. Its totient is φ = 1976774224080.

The previous prime is 1977012111331. The next prime is 1977012111397. The reversal of 1977012111359 is 9531112107791.

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 1977012111359 - 2²⁴ = 1976995334143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977012111259) 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, 118931174 + ... + 118947795.

It is an arithmetic number, because the mean of its divisors is an integer number (494312499660).

Almost surely, 2^{1977012111359} is an apocalyptic number.

1977012111359 is a deficient number, since it is larger than the sum of its proper divisors (237887281).

1977012111359 is an equidigital number, since it uses as much as digits as its factorization.

1977012111359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237887280.

The product of its (nonzero) digits is 119070, while the sum is 47.

The spelling of 1977012111359 in words is "one trillion, nine hundred seventy-seven billion, twelve million, one hundred eleven thousand, three hundred fifty-nine".