38820505565501 has 8 divisors (see below), whose sum is σ = 42363587036064. Its totient is φ = 35279748195120.

The previous prime is 38820505565483. The next prime is 38820505565509. The reversal of 38820505565501 is 10556550502883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38820505565501 - 2¹⁴ = 38820505549117 is a prime.

It is a super-2 number, since 2×38820505565501² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38820505565509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580990115 + ... + 581056928.

It is an arithmetic number, because the mean of its divisors is an integer number (5295448379508).

Almost surely, 2^{38820505565501} is an apocalyptic number.

It is an amenable number.

38820505565501 is a deficient number, since it is larger than the sum of its proper divisors (3543081470563).

38820505565501 is a wasteful number, since it uses less digits than its factorization.

38820505565501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162050091.

The product of its (nonzero) digits is 7200000, while the sum is 53.

The spelling of 38820505565501 in words is "thirty-eight trillion, eight hundred twenty billion, five hundred five million, five hundred sixty-five thousand, five hundred one".