7958198256533 has 6 divisors (see below), whose sum is σ = 9257495931126. Its totient is φ = 6821312791272.

The previous prime is 7958198256487. The next prime is 7958198256563. The reversal of 7958198256533 is 3356528918597.

It can be written as a sum of positive squares in only one way, i.e., 7614829212004 + 343369044529 = 2759498^2 + 585977^2 .

It is not a de Polignac number, because 7958198256533 - 2¹⁰ = 7958198255509 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 (7958198256563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81206104610 + ... + 81206104707.

It is an arithmetic number, because the mean of its divisors is an integer number (1542915988521).

Almost surely, 2^{7958198256533} is an apocalyptic number.

It is an amenable number.

7958198256533 is a deficient number, since it is larger than the sum of its proper divisors (1299297674593).

7958198256533 is a wasteful number, since it uses less digits than its factorization.

7958198256533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162412209331 (or 162412209324 counting only the distinct ones).

The product of its digits is 489888000, while the sum is 71.

The spelling of 7958198256533 in words is "seven trillion, nine hundred fifty-eight billion, one hundred ninety-eight million, two hundred fifty-six thousand, five hundred thirty-three".