1641530046551 has 2 divisors, whose sum is σ = 1641530046552. Its totient is φ = 1641530046550.

The previous prime is 1641530046529. The next prime is 1641530046577. The reversal of 1641530046551 is 1556400351461.

It is a weak prime.

It is an emirp because it is prime and its reverse (1556400351461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1641530046551 - 2¹⁰ = 1641530045527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1641530046499 and 1641530046508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641530046511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820765023275 + 820765023276.

It is an arithmetic number, because the mean of its divisors is an integer number (820765023276).

Almost surely, 2^{1641530046551} is an apocalyptic number.

1641530046551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641530046551 is an equidigital number, since it uses as much as digits as its factorization.

1641530046551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 1641530046551 in words is "one trillion, six hundred forty-one billion, five hundred thirty million, forty-six thousand, five hundred fifty-one".