351521353020091 has 2 divisors, whose sum is σ = 351521353020092. Its totient is φ = 351521353020090.

The previous prime is 351521353020073. The next prime is 351521353020217. The reversal of 351521353020091 is 190020353125153.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 351521353020091 - 2⁴⁵ = 316336980931259 is a prime.

It is not a weakly prime, because it can be changed into another prime (351521353020011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175760676510045 + 175760676510046.

It is an arithmetic number, because the mean of its divisors is an integer number (175760676510046).

Almost surely, 2^{351521353020091} is an apocalyptic number.

351521353020091 is a deficient number, since it is larger than the sum of its proper divisors (1).

351521353020091 is an equidigital number, since it uses as much as digits as its factorization.

351521353020091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121500, while the sum is 40.

The spelling of 351521353020091 in words is "three hundred fifty-one trillion, five hundred twenty-one billion, three hundred fifty-three million, twenty thousand, ninety-one".