1670713787377 has 2 divisors, whose sum is σ = 1670713787378. Its totient is φ = 1670713787376.

The previous prime is 1670713787357. The next prime is 1670713787443. The reversal of 1670713787377 is 7737873170761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1128430300176 + 542283487201 = 1062276^2 + 736399^2 .

It is a cyclic number.

It is not a de Polignac number, because 1670713787377 - 2¹⁵ = 1670713754609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1670713787357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835356893688 + 835356893689.

It is an arithmetic number, because the mean of its divisors is an integer number (835356893689).

Almost surely, 2^{1670713787377} is an apocalyptic number.

It is an amenable number.

1670713787377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670713787377 is an equidigital number, since it uses as much as digits as its factorization.

1670713787377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50824368, while the sum is 64.

The spelling of 1670713787377 in words is "one trillion, six hundred seventy billion, seven hundred thirteen million, seven hundred eighty-seven thousand, three hundred seventy-seven".