1641564148454 has 16 divisors (see below), whose sum is σ = 2503099819440. Its totient is φ = 807308436480.

The previous prime is 1641564148379. The next prime is 1641564148517. The reversal of 1641564148454 is 4548414651461.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1641564148396 and 1641564148405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27693899 + ... + 27753110.

It is an arithmetic number, because the mean of its divisors is an integer number (156443738715).

Almost surely, 2^{1641564148454} is an apocalyptic number.

1641564148454 is a deficient number, since it is larger than the sum of its proper divisors (861535670986).

1641564148454 is a wasteful number, since it uses less digits than its factorization.

1641564148454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55447255.

The product of its digits is 7372800, while the sum is 53.

The spelling of 1641564148454 in words is "one trillion, six hundred forty-one billion, five hundred sixty-four million, one hundred forty-eight thousand, four hundred fifty-four".