10206563621564 has 6 divisors (see below), whose sum is σ = 17861486337744. Its totient is φ = 5103281810780.

The previous prime is 10206563621543. The next prime is 10206563621591. The reversal of 10206563621564 is 46512636560201.

It is a super-2 number, since 2×10206563621564² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275820452692 + ... + 1275820452699.

It is an arithmetic number, because the mean of its divisors is an integer number (2976914389624).

Almost surely, 2^{10206563621564} is an apocalyptic number.

It is an amenable number.

10206563621564 is a deficient number, since it is larger than the sum of its proper divisors (7654922716180).

10206563621564 is a wasteful number, since it uses less digits than its factorization.

10206563621564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551640905395 (or 2551640905393 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 10206563621564 in words is "ten trillion, two hundred six billion, five hundred sixty-three million, six hundred twenty-one thousand, five hundred sixty-four".