1641377536625 has 16 divisors (see below), whose sum is σ = 2048516645760. Its totient is φ = 1313052362800.

The previous prime is 1641377536621. The next prime is 1641377536649. The reversal of 1641377536625 is 5266357731461.

It is not a de Polignac number, because 1641377536625 - 2² = 1641377536621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1641377536621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3268052 + ... + 3736698.

It is an arithmetic number, because the mean of its divisors is an integer number (128032290360).

Almost surely, 2^{1641377536625} is an apocalyptic number.

It is an amenable number.

1641377536625 is a deficient number, since it is larger than the sum of its proper divisors (407139109135).

1641377536625 is an equidigital number, since it uses as much as digits as its factorization.

1641377536625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496681 (or 496671 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 56.

The spelling of 1641377536625 in words is "one trillion, six hundred forty-one billion, three hundred seventy-seven million, five hundred thirty-six thousand, six hundred twenty-five".