1620102500353 has 2 divisors, whose sum is σ = 1620102500354. Its totient is φ = 1620102500352.

The previous prime is 1620102500321. The next prime is 1620102500389. The reversal of 1620102500353 is 3530052010261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1526984146944 + 93118353409 = 1235712^2 + 305153^2 .

It is a cyclic number.

It is not a de Polignac number, because 1620102500353 - 2⁵ = 1620102500321 is a prime.

It is a super-2 number, since 2×1620102500353² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1620102500953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810051250176 + 810051250177.

It is an arithmetic number, because the mean of its divisors is an integer number (810051250177).

Almost surely, 2^{1620102500353} is an apocalyptic number.

It is an amenable number.

1620102500353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1620102500353 is an equidigital number, since it uses as much as digits as its factorization.

1620102500353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 1620102500353 in words is "one trillion, six hundred twenty billion, one hundred two million, five hundred thousand, three hundred fifty-three".