6477421857081 has 16 divisors (see below), whose sum is σ = 9870394752000. Its totient is φ = 3701369804688.

The previous prime is 6477421857013. The next prime is 6477421857113. The reversal of 6477421857081 is 1807581247746.

It is not a de Polignac number, because 6477421857081 - 2¹³ = 6477421848889 is a prime.

It is a super-2 number, since 2×6477421857081² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6477421847081) 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, 7898820 + ... + 8680218.

It is an arithmetic number, because the mean of its divisors is an integer number (616899672000).

Almost surely, 2^{6477421857081} is an apocalyptic number.

It is an amenable number.

6477421857081 is a deficient number, since it is larger than the sum of its proper divisors (3392972894919).

6477421857081 is a wasteful number, since it uses less digits than its factorization.

6477421857081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176148.

The product of its (nonzero) digits is 21073920, while the sum is 60.

The spelling of 6477421857081 in words is "six trillion, four hundred seventy-seven billion, four hundred twenty-one million, eight hundred fifty-seven thousand, eighty-one".