7477421857081 has 8 divisors (see below), whose sum is σ = 8157259448928. Its totient is φ = 6797596260000.

The previous prime is 7477421857063. The next prime is 7477421857201. The reversal of 7477421857081 is 1807581247747.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7477421857081 - 2¹⁹ = 7477421332793 is a prime.

It is a super-2 number, since 2×7477421857081² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7477421857981) 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 7 ways as a sum of consecutive naturals, for example, 1669620 + ... + 4212181.

It is an arithmetic number, because the mean of its divisors is an integer number (1019657431116).

Almost surely, 2^{7477421857081} is an apocalyptic number.

It is an amenable number.

7477421857081 is a deficient number, since it is larger than the sum of its proper divisors (679837591847).

7477421857081 is a wasteful number, since it uses less digits than its factorization.

7477421857081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5997383.

The product of its (nonzero) digits is 24586240, while the sum is 61.

The spelling of 7477421857081 in words is "seven trillion, four hundred seventy-seven billion, four hundred twenty-one million, eight hundred fifty-seven thousand, eighty-one".