6553880977 has 6 divisors (see below), whose sum is σ = 7623902418. Its totient is φ = 5617612224.

The previous prime is 6553880941. The next prime is 6553880989. The reversal of 6553880977 is 7790883556.

It can be written as a sum of positive squares in only one way, i.e., 3332637441 + 3221243536 = 57729^2 + 56756^2 .

It is not a de Polignac number, because 6553880977 - 2³¹ = 4406397329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6553880677) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 66876288 + ... + 66876385.

It is an arithmetic number, because the mean of its divisors is an integer number (1270650403).

Almost surely, 2^6553880977 is an apocalyptic number.

It is an amenable number.

6553880977 is a deficient number, since it is larger than the sum of its proper divisors (1070021441).

6553880977 is a wasteful number, since it uses less digits than its factorization.

6553880977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133752687 (or 133752680 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 58.

The square root of 6553880977 is about 80956.0434865736. The cubic root of 6553880977 is about 1871.3980962710.

The spelling of 6553880977 in words is "six billion, five hundred fifty-three million, eight hundred eighty thousand, nine hundred seventy-seven".