1628401864847 has 24 divisors (see below), whose sum is σ = 1787883123312. Its totient is φ = 1477951731200.

The previous prime is 1628401864801. The next prime is 1628401864849. The reversal of 1628401864847 is 7484681048261.

It is a happy number.

It is not a de Polignac number, because 1628401864847 - 2⁶ = 1628401864783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628401864849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11668472 + ... + 11807202.

It is an arithmetic number, because the mean of its divisors is an integer number (74495130138).

Almost surely, 2^{1628401864847} is an apocalyptic number.

1628401864847 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1628401864847 is a deficient number, since it is larger than the sum of its proper divisors (159481258465).

1628401864847 is a wasteful number, since it uses less digits than its factorization.

1628401864847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139627 (or 139598 counting only the distinct ones).

The product of its (nonzero) digits is 16515072, while the sum is 59.

The spelling of 1628401864847 in words is "one trillion, six hundred twenty-eight billion, four hundred one million, eight hundred sixty-four thousand, eight hundred forty-seven".