1620015371153 has 2 divisors, whose sum is σ = 1620015371154. Its totient is φ = 1620015371152.

The previous prime is 1620015371083. The next prime is 1620015371179. The reversal of 1620015371153 is 3511735100261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1514888332864 + 105127038289 = 1230808^2 + 324233^2 .

It is a cyclic number.

It is not a de Polignac number, because 1620015371153 - 2¹² = 1620015367057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1620015370153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810007685576 + 810007685577.

It is an arithmetic number, because the mean of its divisors is an integer number (810007685577).

Almost surely, 2^{1620015371153} is an apocalyptic number.

It is an amenable number.

1620015371153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1620015371153 is an equidigital number, since it uses as much as digits as its factorization.

1620015371153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 35.

The spelling of 1620015371153 in words is "one trillion, six hundred twenty billion, fifteen million, three hundred seventy-one thousand, one hundred fifty-three".