6540261253215 has 32 divisors (see below), whose sum is σ = 11020390913280. Its totient is φ = 3302988834816.

The previous prime is 6540261253193. The next prime is 6540261253217. The reversal of 6540261253215 is 5123521620456.

It is not a de Polignac number, because 6540261253215 - 2¹⁹ = 6540260728927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540261253217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4828057 + ... + 6032466.

It is an arithmetic number, because the mean of its divisors is an integer number (344387216040).

Almost surely, 2^{6540261253215} is an apocalyptic number.

6540261253215 is a deficient number, since it is larger than the sum of its proper divisors (4480129660065).

6540261253215 is a wasteful number, since it uses less digits than its factorization.

6540261253215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10862663.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 6540261253215 in words is "six trillion, five hundred forty billion, two hundred sixty-one million, two hundred fifty-three thousand, two hundred fifteen".