1971579412973 has 16 divisors (see below), whose sum is σ = 2002211108352. Its totient is φ = 1941114414000.

The previous prime is 1971579412969. The next prime is 1971579412981. The reversal of 1971579412973 is 3792149751791.

It is a cyclic number.

It is not a de Polignac number, because 1971579412973 - 2² = 1971579412969 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 (1971579411973) 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, 198522818 + ... + 198532748.

It is an arithmetic number, because the mean of its divisors is an integer number (125138194272).

Almost surely, 2^{1971579412973} is an apocalyptic number.

It is an amenable number.

1971579412973 is a deficient number, since it is larger than the sum of its proper divisors (30631695379).

1971579412973 is an equidigital number, since it uses as much as digits as its factorization.

1971579412973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18016.

The product of its digits is 30005640, while the sum is 65.

The spelling of 1971579412973 in words is "one trillion, nine hundred seventy-one billion, five hundred seventy-nine million, four hundred twelve thousand, nine hundred seventy-three".