6535519412 has 6 divisors (see below), whose sum is σ = 11437158978. Its totient is φ = 3267759704.

The previous prime is 6535519409. The next prime is 6535519427. The reversal of 6535519412 is 2149155356.

It can be written as a sum of positive squares in only one way, i.e., 6322476196 + 213043216 = 79514^2 + 14596^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6535519412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 816939923 + ... + 816939930.

It is an arithmetic number, because the mean of its divisors is an integer number (1906193163).

Almost surely, 2^6535519412 is an apocalyptic number.

It is an amenable number.

6535519412 is a deficient number, since it is larger than the sum of its proper divisors (4901639566).

6535519412 is a wasteful number, since it uses less digits than its factorization.

6535519412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633879857 (or 1633879855 counting only the distinct ones).

The product of its digits is 162000, while the sum is 41.

The square root of 6535519412 is about 80842.5594102512. The cubic root of 6535519412 is about 1869.6488051434.

The spelling of 6535519412 in words is "six billion, five hundred thirty-five million, five hundred nineteen thousand, four hundred twelve".