1672895557447 has 2 divisors, whose sum is σ = 1672895557448. Its totient is φ = 1672895557446.

The previous prime is 1672895557369. The next prime is 1672895557477. The reversal of 1672895557447 is 7447555982761.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1672895557447 - 2¹⁵ = 1672895524679 is a prime.

It is a super-2 number, since 2×1672895557447² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1672895557477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836447778723 + 836447778724.

It is an arithmetic number, because the mean of its divisors is an integer number (836447778724).

Almost surely, 2^{1672895557447} is an apocalyptic number.

1672895557447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672895557447 is an equidigital number, since it uses as much as digits as its factorization.

1672895557447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 592704000, while the sum is 70.

The spelling of 1672895557447 in words is "one trillion, six hundred seventy-two billion, eight hundred ninety-five million, five hundred fifty-seven thousand, four hundred forty-seven".