670187205656531 has 2 divisors, whose sum is σ = 670187205656532. Its totient is φ = 670187205656530.

The previous prime is 670187205656509. The next prime is 670187205656597. The reversal of 670187205656531 is 135656502781076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670187205656531 - 2¹⁰ = 670187205655507 is a prime.

It is a super-2 number, since 2×670187205656531² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (670187205653531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335093602828265 + 335093602828266.

It is an arithmetic number, because the mean of its divisors is an integer number (335093602828266).

Almost surely, 2^{670187205656531} is an apocalyptic number.

670187205656531 is a deficient number, since it is larger than the sum of its proper divisors (1).

670187205656531 is an equidigital number, since it uses as much as digits as its factorization.

670187205656531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504000, while the sum is 62.

The spelling of 670187205656531 in words is "six hundred seventy trillion, one hundred eighty-seven billion, two hundred five million, six hundred fifty-six thousand, five hundred thirty-one".