1979356609933 has 4 divisors (see below), whose sum is σ = 1979874363328. Its totient is φ = 1978838856540.

The previous prime is 1979356609889. The next prime is 1979356609963. The reversal of 1979356609933 is 3399066539791.

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 1979356609933 - 2¹⁷ = 1979356478861 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 (1979356609963) 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, 258870963 + ... + 258878608.

It is an arithmetic number, because the mean of its divisors is an integer number (494968590832).

Almost surely, 2^{1979356609933} is an apocalyptic number.

It is an amenable number.

1979356609933 is a deficient number, since it is larger than the sum of its proper divisors (517753395).

1979356609933 is an equidigital number, since it uses as much as digits as its factorization.

1979356609933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517753394.

The product of its (nonzero) digits is 223205220, while the sum is 70.

The spelling of 1979356609933 in words is "one trillion, nine hundred seventy-nine billion, three hundred fifty-six million, six hundred nine thousand, nine hundred thirty-three".