975213798549 has 16 divisors (see below), whose sum is σ = 1309057646208. Its totient is φ = 645759346752.

The previous prime is 975213798539. The next prime is 975213798557. The reversal of 975213798549 is 945897312579.

It is not a de Polignac number, because 975213798549 - 2¹² = 975213794453 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (975213798529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874144 + ... + 1647590.

It is an arithmetic number, because the mean of its divisors is an integer number (81816102888).

Almost surely, 2^975213798549 is an apocalyptic number.

It is an amenable number.

975213798549 is a deficient number, since it is larger than the sum of its proper divisors (333843847659).

975213798549 is a wasteful number, since it uses less digits than its factorization.

975213798549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776284.

The product of its digits is 171460800, while the sum is 69.

The spelling of 975213798549 in words is "nine hundred seventy-five billion, two hundred thirteen million, seven hundred ninety-eight thousand, five hundred forty-nine".