1602257451481 has 2 divisors, whose sum is σ = 1602257451482. Its totient is φ = 1602257451480.

The previous prime is 1602257451449. The next prime is 1602257451493. The reversal of 1602257451481 is 1841547522061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1363327123456 + 238930328025 = 1167616^2 + 488805^2 .

It is a cyclic number.

It is not a de Polignac number, because 1602257451481 - 2⁵ = 1602257451449 is a prime.

It is a super-2 number, since 2×1602257451481² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1602257455481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801128725740 + 801128725741.

It is an arithmetic number, because the mean of its divisors is an integer number (801128725741).

Almost surely, 2^{1602257451481} is an apocalyptic number.

It is an amenable number.

1602257451481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1602257451481 is an equidigital number, since it uses as much as digits as its factorization.

1602257451481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 1602257451481 in words is "one trillion, six hundred two billion, two hundred fifty-seven million, four hundred fifty-one thousand, four hundred eighty-one".