6523354840 has 16 divisors (see below), whose sum is σ = 14677548480. Its totient is φ = 2609341920.

The previous prime is 6523354837. The next prime is 6523354843. The reversal of 6523354840 is 484533256.

It is an interprime number because it is at equal distance from previous prime (6523354837) and next prime (6523354843).

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 163083871 = 6523354840 / (6 + 5 + 2 + 3 + 3 + 5 + 4 + 8 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 6523354793 and 6523354802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6523354843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81541896 + ... + 81541975.

It is an arithmetic number, because the mean of its divisors is an integer number (917346780).

Almost surely, 2^6523354840 is an apocalyptic number.

It is an amenable number.

6523354840 is an abundant number, since it is smaller than the sum of its proper divisors (8154193640).

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

6523354840 is a wasteful number, since it uses less digits than its factorization.

6523354840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163083882 (or 163083878 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

The square root of 6523354840 is about 80767.2881803023. The cubic root of 6523354840 is about 1868.4880913321.

The spelling of 6523354840 in words is "six billion, five hundred twenty-three million, three hundred fifty-four thousand, eight hundred forty".