102805874643 has 16 divisors (see below), whose sum is σ = 138703017600. Its totient is φ = 67723972800.

The previous prime is 102805874623. The next prime is 102805874653. The reversal of 102805874643 is 346478508201.

It is not a de Polignac number, because 102805874643 - 2¹⁸ = 102805612499 is a prime.

It is a super-2 number, since 2×102805874643² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102805874592 and 102805874601.

It is not an unprimeable number, because it can be changed into a prime (102805874603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299668 + ... + 543518.

It is an arithmetic number, because the mean of its divisors is an integer number (8668938600).

Almost surely, 2^102805874643 is an apocalyptic number.

102805874643 is a deficient number, since it is larger than the sum of its proper divisors (35897142957).

102805874643 is a wasteful number, since it uses less digits than its factorization.

102805874643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245522.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 102805874643 in words is "one hundred two billion, eight hundred five million, eight hundred seventy-four thousand, six hundred forty-three".