1641520544053 has 4 divisors (see below), whose sum is σ = 1767791355148. Its totient is φ = 1515249732960.

The previous prime is 1641520544029. The next prime is 1641520544087. The reversal of 1641520544053 is 3504450251461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 95161144324 + 1546359399729 = 308482^2 + 1243527^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641520544053 - 2²¹ = 1641518446901 is a prime.

It is a super-2 number, since 2×1641520544053² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1641520543997 and 1641520544015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641520544093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63135405528 + ... + 63135405553.

It is an arithmetic number, because the mean of its divisors is an integer number (441947838787).

Almost surely, 2^{1641520544053} is an apocalyptic number.

1641520544053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1641520544053 is a deficient number, since it is larger than the sum of its proper divisors (126270811095).

1641520544053 is a wasteful number, since it uses less digits than its factorization.

1641520544053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126270811094.

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 1641520544053 in words is "one trillion, six hundred forty-one billion, five hundred twenty million, five hundred forty-four thousand, fifty-three".