6501888477 has 48 divisors (see below), whose sum is σ = 10856926080. Its totient is φ = 3672729216.

The previous prime is 6501888443. The next prime is 6501888499. The reversal of 6501888477 is 7748881056.

It is a happy number.

It is not a de Polignac number, because 6501888477 - 2¹² = 6501884381 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6501888077) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4030123 + ... + 4031735.

It is an arithmetic number, because the mean of its divisors is an integer number (226185960).

Almost surely, 2^6501888477 is an apocalyptic number.

It is an amenable number.

6501888477 is a deficient number, since it is larger than the sum of its proper divisors (4355037603).

6501888477 is a wasteful number, since it uses less digits than its factorization.

6501888477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322 (or 2319 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The square root of 6501888477 is about 80634.2884696083. The cubic root of 6501888477 is about 1866.4362983816.

The spelling of 6501888477 in words is "six billion, five hundred one million, eight hundred eighty-eight thousand, four hundred seventy-seven".