1977471595009 has 4 divisors (see below), whose sum is σ = 1987408638400. Its totient is φ = 1967534551620.

The previous prime is 1977471595003. The next prime is 1977471595069. The reversal of 1977471595009 is 9005951747791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1977471595009 - 2⁵ = 1977471594977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1977471595003) 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, 4968521397 + ... + 4968521794.

It is an arithmetic number, because the mean of its divisors is an integer number (496852159600).

Almost surely, 2^{1977471595009} is an apocalyptic number.

It is an amenable number.

1977471595009 is a deficient number, since it is larger than the sum of its proper divisors (9937043391).

1977471595009 is an equidigital number, since it uses as much as digits as its factorization.

1977471595009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9937043390.

The product of its (nonzero) digits is 25004700, while the sum is 64.

The spelling of 1977471595009 in words is "one trillion, nine hundred seventy-seven billion, four hundred seventy-one million, five hundred ninety-five thousand, nine".