6771513553 has 16 divisors (see below), whose sum is σ = 7781304960. Its totient is φ = 5772412800.

The previous prime is 6771513527. The next prime is 6771513557. The reversal of 6771513553 is 3553151776.

It is not a de Polignac number, because 6771513553 - 2⁵ = 6771513521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6771513557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1120143 + ... + 1126171.

It is an arithmetic number, because the mean of its divisors is an integer number (486331560).

Almost surely, 2^6771513553 is an apocalyptic number.

It is an amenable number.

6771513553 is a deficient number, since it is larger than the sum of its proper divisors (1009791407).

6771513553 is a wasteful number, since it uses less digits than its factorization.

6771513553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6888.

The product of its digits is 330750, while the sum is 43.

The square root of 6771513553 is about 82289.2067831499. The cubic root of 6771513553 is about 1891.8872513218.

The spelling of 6771513553 in words is "six billion, seven hundred seventy-one million, five hundred thirteen thousand, five hundred fifty-three".