6461151240 has 64 divisors (see below), whose sum is σ = 20523663360. Its totient is φ = 1621621760.

The previous prime is 6461151239. The next prime is 6461151269. The reversal of 6461151240 is 421511646.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 6461151198 and 6461151207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1581576 + ... + 1585655.

It is an arithmetic number, because the mean of its divisors is an integer number (320682240).

Almost surely, 2^6461151240 is an apocalyptic number.

6461151240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6461151240 is an abundant number, since it is smaller than the sum of its proper divisors (14062512120).

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

6461151240 is a wasteful number, since it uses less digits than its factorization.

6461151240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167262 (or 3167258 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 6461151240 is about 80381.2866281699. The cubic root of 6461151240 is about 1862.5301098086.

Adding to 6461151240 its reverse (421511646), we get a palindrome (6882662886).

The spelling of 6461151240 in words is "six billion, four hundred sixty-one million, one hundred fifty-one thousand, two hundred forty".