6535951240 has 384 divisors, whose sum is σ = 19856793600. Its totient is φ = 1912135680.

The previous prime is 6535951207. The next prime is 6535951249. The reversal of 6535951240 is 421595356.

It is a super-2 number, since 2×6535951240² = 85437317223315075200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 6535951193 and 6535951202.

It is not an unprimeable number, because it can be changed into a prime (6535951249) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 34219545 + ... + 34219735.

It is an arithmetic number, because the mean of its divisors is an integer number (51710400).

Almost surely, 2^6535951240 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 6535951240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9928396800).

6535951240 is an abundant number, since it is smaller than the sum of its proper divisors (13320842360).

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

6535951240 is a wasteful number, since it uses less digits than its factorization.

6535951240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 6535951240 is about 80845.2301623293. The cubic root of 6535951240 is about 1869.6899826368.

The spelling of 6535951240 in words is "six billion, five hundred thirty-five million, nine hundred fifty-one thousand, two hundred forty".