6489509550 has 48 divisors (see below), whose sum is σ = 16528970352. Its totient is φ = 1683763200.

The previous prime is 6489509549. The next prime is 6489509557. The reversal of 6489509550 is 559059846.

It is a super-2 number, since 2×6489509550² = 84227468399082405000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6489509493 and 6489509502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6489509557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 579091 + ... + 590190.

It is an arithmetic number, because the mean of its divisors is an integer number (344353549).

Almost surely, 2^6489509550 is an apocalyptic number.

6489509550 is an abundant number, since it is smaller than the sum of its proper divisors (10039460802).

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

6489509550 is a wasteful number, since it uses less digits than its factorization.

6489509550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169333 (or 1169328 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 51.

The square root of 6489509550 is about 80557.4922027740. The cubic root of 6489509550 is about 1865.2510449408.

The spelling of 6489509550 in words is "six billion, four hundred eighty-nine million, five hundred nine thousand, five hundred fifty".