38247661481 has 4 divisors (see below), whose sum is σ = 38252206464. Its totient is φ = 38243116500.

The previous prime is 38247661453. The next prime is 38247661511. The reversal of 38247661481 is 18416674283.

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: 18416674283 = 7 ⋅2630953469.

It is a cyclic number.

It is not a de Polignac number, because 38247661481 - 2¹⁴ = 38247645097 is a prime.

It is a super-2 number, since 2×38247661481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38247661681) 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, 2259845 + ... + 2276706.

It is an arithmetic number, because the mean of its divisors is an integer number (9563051616).

Almost surely, 2^38247661481 is an apocalyptic number.

It is an amenable number.

38247661481 is a deficient number, since it is larger than the sum of its proper divisors (4544983).

38247661481 is an equidigital number, since it uses as much as digits as its factorization.

38247661481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4544982.

The product of its digits is 1548288, while the sum is 50.

The spelling of 38247661481 in words is "thirty-eight billion, two hundred forty-seven million, six hundred sixty-one thousand, four hundred eighty-one".