439684730451081 has 48 divisors (see below), whose sum is σ = 674687063157120. Its totient is φ = 274967996997120.

The previous prime is 439684730451023. The next prime is 439684730451133. The reversal of 439684730451081 is 180154037486934.

439684730451081 is a `hidden beast` number, since 4 + 3 + 9 + 6 + 8 + 4 + 7 + 30 + 4 + 510 + 81 = 666.

It is not a de Polignac number, because 439684730451081 - 2¹³ = 439684730442889 is a prime.

It is a super-2 number, since 2×439684730451081² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (439684730453081) 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, 54063226 + ... + 61661996.

It is an arithmetic number, because the mean of its divisors is an integer number (14055980482440).

Almost surely, 2^{439684730451081} is an apocalyptic number.

It is an amenable number.

439684730451081 is a deficient number, since it is larger than the sum of its proper divisors (235002332706039).

439684730451081 is a wasteful number, since it uses less digits than its factorization.

439684730451081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7600046 (or 7600043 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 439684730451081 in words is "four hundred thirty-nine trillion, six hundred eighty-four billion, seven hundred thirty million, four hundred fifty-one thousand, eighty-one".