353486749403981 has 2 divisors, whose sum is σ = 353486749403982. Its totient is φ = 353486749403980.

The previous prime is 353486749403911. The next prime is 353486749404049. The reversal of 353486749403981 is 189304947684353.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285428522836900 + 68058226567081 = 16894630^2 + 8249741^2 .

It is a cyclic number.

It is not a de Polignac number, because 353486749403981 - 2³⁰ = 353485675662157 is a prime.

It is a super-2 number, since 2×353486749403981² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 353486749403899 and 353486749403908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (353486749403911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176743374701990 + 176743374701991.

It is an arithmetic number, because the mean of its divisors is an integer number (176743374701991).

Almost surely, 2^{353486749403981} is an apocalyptic number.

It is an amenable number.

353486749403981 is a deficient number, since it is larger than the sum of its proper divisors (1).

353486749403981 is an equidigital number, since it uses as much as digits as its factorization.

353486749403981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1881169920, while the sum is 74.

The spelling of 353486749403981 in words is "three hundred fifty-three trillion, four hundred eighty-six billion, seven hundred forty-nine million, four hundred three thousand, nine hundred eighty-one".