6401459655 has 12 divisors (see below), whose sum is σ = 11095863480. Its totient is φ = 3414111792.

The previous prime is 6401459641. The next prime is 6401459677. The reversal of 6401459655 is 5569541046.

6401459655 is a `hidden beast` number, since 6 + 4 + 0 + 1 + 4 + 596 + 55 = 666.

It is not a de Polignac number, because 6401459655 - 2⁴ = 6401459639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 142254659 = 6401459655 / (6 + 4 + 0 + 1 + 4 + 5 + 9 + 6 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 6401459655.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71127285 + ... + 71127374.

It is an arithmetic number, because the mean of its divisors is an integer number (924655290).

Almost surely, 2^6401459655 is an apocalyptic number.

6401459655 is a deficient number, since it is larger than the sum of its proper divisors (4694403825).

6401459655 is a wasteful number, since it uses less digits than its factorization.

6401459655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142254670 (or 142254667 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 6401459655 is about 80009.1223236451. The cubic root of 6401459655 is about 1856.7766710148.

The spelling of 6401459655 in words is "six billion, four hundred one million, four hundred fifty-nine thousand, six hundred fifty-five".