473553721161881 has 2 divisors, whose sum is σ = 473553721161882. Its totient is φ = 473553721161880.

The previous prime is 473553721161767. The next prime is 473553721161893. The reversal of 473553721161881 is 188161127355374.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385455317256256 + 88098403905625 = 19633016^2 + 9386075^2 .

It is a cyclic number.

It is not a de Polignac number, because 473553721161881 - 2¹⁸ = 473553720899737 is a prime.

It is a super-2 number, since 2×473553721161881² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (473553721161581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236776860580940 + 236776860580941.

It is an arithmetic number, because the mean of its divisors is an integer number (236776860580941).

Almost surely, 2^{473553721161881} is an apocalyptic number.

It is an amenable number.

473553721161881 is a deficient number, since it is larger than the sum of its proper divisors (1).

473553721161881 is an equidigital number, since it uses as much as digits as its factorization.

473553721161881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33868800, while the sum is 62.

The spelling of 473553721161881 in words is "four hundred seventy-three trillion, five hundred fifty-three billion, seven hundred twenty-one million, one hundred sixty-one thousand, eight hundred eighty-one".