6511132101 has 4 divisors (see below), whose sum is σ = 8681509472. Its totient is φ = 4340754732.

The previous prime is 6511132099. The next prime is 6511132129. The reversal of 6511132101 is 1012311156.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6511132101 - 2¹ = 6511132099 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 (6511131101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085188681 + ... + 1085188686.

It is an arithmetic number, because the mean of its divisors is an integer number (2170377368).

Almost surely, 2^6511132101 is an apocalyptic number.

It is an amenable number.

6511132101 is a deficient number, since it is larger than the sum of its proper divisors (2170377371).

6511132101 is a wasteful number, since it uses less digits than its factorization.

6511132101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170377370.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 6511132101 is about 80691.5863086109. The cubic root of 6511132101 is about 1867.3203731110.

Adding to 6511132101 its reverse (1012311156), we get a palindrome (7523443257).

The spelling of 6511132101 in words is "six billion, five hundred eleven million, one hundred thirty-two thousand, one hundred one".