511271704066 has 8 divisors (see below), whose sum is σ = 766932582780. Its totient is φ = 255627509808.

The previous prime is 511271704063. The next prime is 511271704079. The reversal of 511271704066 is 660407172115.

It can be written as a sum of positive squares in 2 ways, for example, as 511103457225 + 168246841 = 714915^2 + 12971^2 .

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

It is a super-2 number, since 2×511271704066² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (511271704063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4094221 + ... + 4217248.

Almost surely, 2^511271704066 is an apocalyptic number.

511271704066 is a deficient number, since it is larger than the sum of its proper divisors (255660878714).

511271704066 is a wasteful number, since it uses less digits than its factorization.

511271704066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8342228.

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 511271704066 in words is "five hundred eleven billion, two hundred seventy-one million, seven hundred four thousand, sixty-six".