1977412581329 has 8 divisors (see below), whose sum is σ = 2094285080160. Its totient is φ = 1860601650496.

The previous prime is 1977412581301. The next prime is 1977412581337. The reversal of 1977412581329 is 9231852147791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1977412581329 - 2³² = 1973117614033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1977412581629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15325859 + ... + 15454344.

It is an arithmetic number, because the mean of its divisors is an integer number (261785635020).

Almost surely, 2^{1977412581329} is an apocalyptic number.

It is an amenable number.

1977412581329 is a deficient number, since it is larger than the sum of its proper divisors (116872498831).

1977412581329 is a wasteful number, since it uses less digits than its factorization.

1977412581329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30783999.

The product of its digits is 7620480, while the sum is 59.

The spelling of 1977412581329 in words is "one trillion, nine hundred seventy-seven billion, four hundred twelve million, five hundred eighty-one thousand, three hundred twenty-nine".