6541651545 has 64 divisors (see below), whose sum is σ = 12465218304. Its totient is φ = 2887557120.

The previous prime is 6541651507. The next prime is 6541651549. The reversal of 6541651545 is 5451561456.

It is not a de Polignac number, because 6541651545 - 2¹² = 6541647449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6541651497 and 6541651506.

It is not an unprimeable number, because it can be changed into a prime (6541651549) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 135697 + ... + 177473.

It is an arithmetic number, because the mean of its divisors is an integer number (194769036).

Almost surely, 2^6541651545 is an apocalyptic number.

6541651545 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6541651545 is a deficient number, since it is larger than the sum of its proper divisors (5923566759).

6541651545 is a wasteful number, since it uses less digits than its factorization.

6541651545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41882.

The product of its digits is 360000, while the sum is 42.

The square root of 6541651545 is about 80880.4769088313. The cubic root of 6541651545 is about 1870.2333723633.

The spelling of 6541651545 in words is "six billion, five hundred forty-one million, six hundred fifty-one thousand, five hundred forty-five".