1064520671081 has 8 divisors (see below), whose sum is σ = 1216622834880. Its totient is φ = 912425452848.

The previous prime is 1064520671059. The next prime is 1064520671099. The reversal of 1064520671081 is 1801760254601.

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

It is a de Polignac number, because none of the positive numbers 2^k-1064520671081 is a prime.

It is a super-2 number, since 2×1064520671081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1064520671881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1403711 + ... + 2024708.

It is an arithmetic number, because the mean of its divisors is an integer number (152077854360).

Almost surely, 2^{1064520671081} is an apocalyptic number.

It is an amenable number.

1064520671081 is a deficient number, since it is larger than the sum of its proper divisors (152102163799).

1064520671081 is an equidigital number, since it uses as much as digits as its factorization.

1064520671081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472783.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 1064520671081 in words is "one trillion, sixty-four billion, five hundred twenty million, six hundred seventy-one thousand, eighty-one".