6525636993 has 8 divisors (see below), whose sum is σ = 9667610400. Its totient is φ = 4350424644.

The previous prime is 6525636991. The next prime is 6525637007. The reversal of 6525636993 is 3996365256.

It is not a de Polignac number, because 6525636993 - 2¹ = 6525636991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6525636991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120845103 + ... + 120845156.

It is an arithmetic number, because the mean of its divisors is an integer number (1208451300).

Almost surely, 2^6525636993 is an apocalyptic number.

It is an amenable number.

6525636993 is a deficient number, since it is larger than the sum of its proper divisors (3141973407).

6525636993 is a wasteful number, since it uses less digits than its factorization.

6525636993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241690268 (or 241690262 counting only the distinct ones).

The product of its digits is 7873200, while the sum is 54.

The square root of 6525636993 is about 80781.4148984777. The cubic root of 6525636993 is about 1868.7059587045.

The spelling of 6525636993 in words is "six billion, five hundred twenty-five million, six hundred thirty-six thousand, nine hundred ninety-three".