1641147557541 has 16 divisors (see below), whose sum is σ = 2365618104000. Its totient is φ = 1008500347008.

The previous prime is 1641147557507. The next prime is 1641147557561. The reversal of 1641147557541 is 1457557411461.

It is not a de Polignac number, because 1641147557541 - 2¹⁸ = 1641147295397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641147557561) 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 15 ways as a sum of consecutive naturals, for example, 389079816 + ... + 389084033.

It is an arithmetic number, because the mean of its divisors is an integer number (147851131500).

Almost surely, 2^{1641147557541} is an apocalyptic number.

It is an amenable number.

1641147557541 is a deficient number, since it is larger than the sum of its proper divisors (724470546459).

1641147557541 is a wasteful number, since it uses less digits than its factorization.

1641147557541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778163908.

The product of its digits is 2352000, while the sum is 51.

The spelling of 1641147557541 in words is "one trillion, six hundred forty-one billion, one hundred forty-seven million, five hundred fifty-seven thousand, five hundred forty-one".