6400959534 has 12 divisors (see below), whose sum is σ = 13868745696. Its totient is φ = 2133653172.

The previous prime is 6400959497. The next prime is 6400959583. The reversal of 6400959534 is 4359590046.

6400959534 is a `hidden beast` number, since 64 + 0 + 0 + 9 + 59 + 534 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6400959534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 177804414 + ... + 177804449.

It is an arithmetic number, because the mean of its divisors is an integer number (1155728808).

Almost surely, 2^6400959534 is an apocalyptic number.

6400959534 is an abundant number, since it is smaller than the sum of its proper divisors (7467786162).

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

6400959534 is a wasteful number, since it uses less digits than its factorization.

6400959534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355608871 (or 355608868 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 6400959534 is about 80005.9968627352. The cubic root of 6400959534 is about 1856.7283155230.

The spelling of 6400959534 in words is "six billion, four hundred million, nine hundred fifty-nine thousand, five hundred thirty-four".