6553766540 has 24 divisors (see below), whose sum is σ = 13799239440. Its totient is φ = 2614586688.

The previous prime is 6553766519. The next prime is 6553766561. The reversal of 6553766540 is 456673556.

It is an interprime number because it is at equal distance from previous prime (6553766519) and next prime (6553766561).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424727 + ... + 439886.

It is an arithmetic number, because the mean of its divisors is an integer number (574968310).

Almost surely, 2^6553766540 is an apocalyptic number.

It is an amenable number.

6553766540 is an abundant number, since it is smaller than the sum of its proper divisors (7245472900).

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

6553766540 is a wasteful number, since it uses less digits than its factorization.

6553766540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865001 (or 864999 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 47.

The square root of 6553766540 is about 80955.3366987007. The cubic root of 6553766540 is about 1871.3872040770.

The spelling of 6553766540 in words is "six billion, five hundred fifty-three million, seven hundred sixty-six thousand, five hundred forty".