6390871455 has 32 divisors (see below), whose sum is σ = 10934129088. Its totient is φ = 3176192000.

The previous prime is 6390871451. The next prime is 6390871463. The reversal of 6390871455 is 5541780936.

It is not a de Polignac number, because 6390871455 - 2² = 6390871451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6390871451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98316 + ... + 149825.

It is an arithmetic number, because the mean of its divisors is an integer number (341691534).

Almost surely, 2^6390871455 is an apocalyptic number.

6390871455 is a deficient number, since it is larger than the sum of its proper divisors (4543257633).

6390871455 is a wasteful number, since it uses less digits than its factorization.

6390871455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248267.

The product of its (nonzero) digits is 907200, while the sum is 48.

The square root of 6390871455 is about 79942.9262349084. The cubic root of 6390871455 is about 1855.7523852456.

The spelling of 6390871455 in words is "six billion, three hundred ninety million, eight hundred seventy-one thousand, four hundred fifty-five".