39152430021 has 4 divisors (see below), whose sum is σ = 52203240032. Its totient is φ = 26101620012.

The previous prime is 39152430019. The next prime is 39152430043. The reversal of 39152430021 is 12003425193.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 39152430021 - 2¹ = 39152430019 is a prime.

It is a super-3 number, since 3×39152430021³ (a number of 33 digits) contains 333 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 (39152430001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6525405001 + ... + 6525405006.

It is an arithmetic number, because the mean of its divisors is an integer number (13050810008).

Almost surely, 2^39152430021 is an apocalyptic number.

It is an amenable number.

39152430021 is a deficient number, since it is larger than the sum of its proper divisors (13050810011).

39152430021 is a wasteful number, since it uses less digits than its factorization.

39152430021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13050810010.

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 39152430021 in words is "thirty-nine billion, one hundred fifty-two million, four hundred thirty thousand, twenty-one".