671521076452 has 12 divisors (see below), whose sum is σ = 1215684707580. Its totient is φ = 324182588576.

The previous prime is 671521076449. The next prime is 671521076461. The reversal of 671521076452 is 254670125176.

671521076452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 193550723136 + 477970353316 = 439944^2 + 691354^2 .

It is a super-2 number, since 2×671521076452² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2894487283 + ... + 2894487514.

It is an arithmetic number, because the mean of its divisors is an integer number (101307058965).

Almost surely, 2^671521076452 is an apocalyptic number.

It is an amenable number.

671521076452 is a deficient number, since it is larger than the sum of its proper divisors (544163631128).

671521076452 is a wasteful number, since it uses less digits than its factorization.

671521076452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5788974830 (or 5788974828 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 671521076452 in words is "six hundred seventy-one billion, five hundred twenty-one million, seventy-six thousand, four hundred fifty-two".