6511542264 has 128 divisors (see below), whose sum is σ = 18879739200. Its totient is φ = 2077470720.

The previous prime is 6511542241. The next prime is 6511542287. The reversal of 6511542264 is 4622451156.

6511542264 is a `hidden beast` number, since 6 + 51 + 1 + 542 + 2 + 64 = 666.

It is an interprime number because it is at equal distance from previous prime (6511542241) and next prime (6511542287).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 462432 + ... + 476304.

Almost surely, 2^6511542264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6511542264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9439869600).

6511542264 is an abundant number, since it is smaller than the sum of its proper divisors (12368196936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6511542264 is a wasteful number, since it uses less digits than its factorization.

6511542264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13982 (or 13972 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 6511542264 is about 80694.1278160933. The cubic root of 6511542264 is about 1867.3595823520.

The spelling of 6511542264 in words is "six billion, five hundred eleven million, five hundred forty-two thousand, two hundred sixty-four".