1672181987053 has 2 divisors, whose sum is σ = 1672181987054. Its totient is φ = 1672181987052.

The previous prime is 1672181987027. The next prime is 1672181987101. The reversal of 1672181987053 is 3507891812761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1625352161449 + 46829825604 = 1274893^2 + 216402^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672181987053 - 2³⁷ = 1534743033581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1672181985053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836090993526 + 836090993527.

It is an arithmetic number, because the mean of its divisors is an integer number (836090993527).

Almost surely, 2^{1672181987053} is an apocalyptic number.

It is an amenable number.

1672181987053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672181987053 is an equidigital number, since it uses as much as digits as its factorization.

1672181987053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 58.

The spelling of 1672181987053 in words is "one trillion, six hundred seventy-two billion, one hundred eighty-one million, nine hundred eighty-seven thousand, fifty-three".