38461750021 has 4 divisors (see below), whose sum is σ = 38468837344. Its totient is φ = 38454662700.

The previous prime is 38461750007. The next prime is 38461750043. The reversal of 38461750021 is 12005716483.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12005716483 = 44959 ⋅267037.

It is a cyclic number.

It is not a de Polignac number, because 38461750021 - 2²⁷ = 38327532293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38461750051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3535515 + ... + 3546376.

It is an arithmetic number, because the mean of its divisors is an integer number (9617209336).

Almost surely, 2^38461750021 is an apocalyptic number.

It is an amenable number.

38461750021 is a deficient number, since it is larger than the sum of its proper divisors (7087323).

38461750021 is an equidigital number, since it uses as much as digits as its factorization.

38461750021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7087322.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 38461750021 in words is "thirty-eight billion, four hundred sixty-one million, seven hundred fifty thousand, twenty-one".