1672420554767 has 2 divisors, whose sum is σ = 1672420554768. Its totient is φ = 1672420554766.

The previous prime is 1672420554757. The next prime is 1672420554811. The reversal of 1672420554767 is 7674550242761.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1672420554767 - 2³⁴ = 1655240685583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1672420554757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836210277383 + 836210277384.

It is an arithmetic number, because the mean of its divisors is an integer number (836210277384).

Almost surely, 2^{1672420554767} is an apocalyptic number.

1672420554767 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672420554767 is an equidigital number, since it uses as much as digits as its factorization.

1672420554767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19756800, while the sum is 56.

The spelling of 1672420554767 in words is "one trillion, six hundred seventy-two billion, four hundred twenty million, five hundred fifty-four thousand, seven hundred sixty-seven".