38240221613 has 8 divisors (see below), whose sum is σ = 43530371136. Its totient is φ = 33252366400.

The previous prime is 38240221609. The next prime is 38240221627. The reversal of 38240221613 is 31612204283.

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

It is not a de Polignac number, because 38240221613 - 2² = 38240221609 is a prime.

It is a super-2 number, since 2×38240221613² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38240221613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38240221673) 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, 75573308 + ... + 75573813.

It is an arithmetic number, because the mean of its divisors is an integer number (5441296392).

Almost surely, 2^38240221613 is an apocalyptic number.

It is an amenable number.

38240221613 is a deficient number, since it is larger than the sum of its proper divisors (5290149523).

38240221613 is a wasteful number, since it uses less digits than its factorization.

38240221613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151147155.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 38240221613 its reverse (31612204283), we get a palindrome (69852425896).

The spelling of 38240221613 in words is "thirty-eight billion, two hundred forty million, two hundred twenty-one thousand, six hundred thirteen".