6535408740 has 48 divisors (see below), whose sum is σ = 20913309312. Its totient is φ = 1493807616.

The previous prime is 6535408729. The next prime is 6535408801. The reversal of 6535408740 is 478045356.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 6535408692 and 6535408701.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7779829 + ... + 7780668.

It is an arithmetic number, because the mean of its divisors is an integer number (435693944).

Almost surely, 2^6535408740 is an apocalyptic number.

6535408740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6535408740 is an abundant number, since it is smaller than the sum of its proper divisors (14377900572).

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

6535408740 is a wasteful number, since it uses less digits than its factorization.

6535408740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15560516 (or 15560514 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The square root of 6535408740 is about 80841.8749164070. The cubic root of 6535408740 is about 1869.6382515859.

The spelling of 6535408740 in words is "six billion, five hundred thirty-five million, four hundred eight thousand, seven hundred forty".