1641879557001 has 16 divisors (see below), whose sum is σ = 2432471683200. Its totient is φ = 1094560485264.

The previous prime is 1641879556951. The next prime is 1641879557029. The reversal of 1641879557001 is 1007559781461.

1641879557001 is a `hidden beast` number, since 1 + 6 + 4 + 1 + 87 + 9 + 557 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 1641879557001 - 2¹⁴ = 1641879540617 is a prime.

It is a super-2 number, since 2×1641879557001² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1641879557041) 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, 480135 + ... + 1874643.

It is an arithmetic number, because the mean of its divisors is an integer number (152029480200).

Almost surely, 2^{1641879557001} is an apocalyptic number.

It is an amenable number.

1641879557001 is a deficient number, since it is larger than the sum of its proper divisors (790592126199).

1641879557001 is a wasteful number, since it uses less digits than its factorization.

1641879557001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438125 (or 1438119 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 54.

The spelling of 1641879557001 in words is "one trillion, six hundred forty-one billion, eight hundred seventy-nine million, five hundred fifty-seven thousand, one".