6511420554 has 8 divisors (see below), whose sum is σ = 13022841120. Its totient is φ = 2170473516.

The previous prime is 6511420549. The next prime is 6511420571. The reversal of 6511420554 is 4550241156.

It is a sphenic number, since it is the product of 3 distinct primes.

6511420554 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542618374 + ... + 542618385.

It is an arithmetic number, because the mean of its divisors is an integer number (1627855140).

Almost surely, 2^6511420554 is an apocalyptic number.

6511420554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6511420554 is a wasteful number, since it uses less digits than its factorization.

6511420554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085236764.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 6511420554 is about 80693.3736684742. The cubic root of 6511420554 is about 1867.3479477427.

The spelling of 6511420554 in words is "six billion, five hundred eleven million, four hundred twenty thousand, five hundred fifty-four".