1351451526561 has 8 divisors (see below), whose sum is σ = 2002150409760. Its totient is φ = 900967684356.

The previous prime is 1351451526541. The next prime is 1351451526563. The reversal of 1351451526561 is 1656251541531.

1351451526561 is a `hidden beast` number, since 1 + 3 + 5 + 14 + 51 + 5 + 26 + 561 = 666.

It is not a de Polignac number, because 1351451526561 - 2⁹ = 1351451526049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1351451526563) 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 in 7 ways as a sum of consecutive naturals, for example, 25026880095 + ... + 25026880148.

It is an arithmetic number, because the mean of its divisors is an integer number (250268801220).

Almost surely, 2^{1351451526561} is an apocalyptic number.

It is an amenable number.

1351451526561 is a deficient number, since it is larger than the sum of its proper divisors (650698883199).

1351451526561 is an equidigital number, since it uses as much as digits as its factorization.

1351451526561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50053760252 (or 50053760246 counting only the distinct ones).

The product of its digits is 540000, while the sum is 45.

The spelling of 1351451526561 in words is "one trillion, three hundred fifty-one billion, four hundred fifty-one million, five hundred twenty-six thousand, five hundred sixty-one".