670151528821 has 2 divisors, whose sum is σ = 670151528822. Its totient is φ = 670151528820.

The previous prime is 670151528791. The next prime is 670151528831. The reversal of 670151528821 is 128825151076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411997096900 + 258154431921 = 641870^2 + 508089^2 .

It is a cyclic number.

It is not a de Polignac number, because 670151528821 - 2²¹ = 670149431669 is a prime.

It is a super-2 number, since 2×670151528821² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670151528831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335075764410 + 335075764411.

It is an arithmetic number, because the mean of its divisors is an integer number (335075764411).

Almost surely, 2^670151528821 is an apocalyptic number.

It is an amenable number.

670151528821 is a deficient number, since it is larger than the sum of its proper divisors (1).

670151528821 is an equidigital number, since it uses as much as digits as its factorization.

670151528821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 46.

Adding to 670151528821 its reverse (128825151076), we get a palindrome (798976679897).

The spelling of 670151528821 in words is "six hundred seventy billion, one hundred fifty-one million, five hundred twenty-eight thousand, eight hundred twenty-one".