6540761117811 has 64 divisors (see below), whose sum is σ = 9205285824000. Its totient is φ = 4126862622720.

The previous prime is 6540761117741. The next prime is 6540761117819. The reversal of 6540761117811 is 1187111670456.

It is a happy number.

It is not a de Polignac number, because 6540761117811 - 2²⁵ = 6540727563379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6540761117819) 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, 559559655 + ... + 559571343.

It is an arithmetic number, because the mean of its divisors is an integer number (143832591000).

Almost surely, 2^{6540761117811} is an apocalyptic number.

6540761117811 is a deficient number, since it is larger than the sum of its proper divisors (2664524706189).

6540761117811 is a wasteful number, since it uses less digits than its factorization.

6540761117811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12804.

The product of its (nonzero) digits is 282240, while the sum is 48.

The spelling of 6540761117811 in words is "six trillion, five hundred forty billion, seven hundred sixty-one million, one hundred seventeen thousand, eight hundred eleven".