38723065845 has 16 divisors (see below), whose sum is σ = 63397764672. Its totient is φ = 20172015360.

The previous prime is 38723065841. The next prime is 38723065853. The reversal of 38723065845 is 54856032783.

It is a happy number.

It is not a de Polignac number, because 38723065845 - 2² = 38723065841 is a prime.

It is a super-3 number, since 3×38723065845³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38723065841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30017236 + ... + 30018525.

It is an arithmetic number, because the mean of its divisors is an integer number (3962360292).

Almost surely, 2^38723065845 is an apocalyptic number.

It is an amenable number.

38723065845 is a deficient number, since it is larger than the sum of its proper divisors (24674698827).

38723065845 is a wasteful number, since it uses less digits than its factorization.

38723065845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60035812.

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 38723065845 in words is "thirty-eight billion, seven hundred twenty-three million, sixty-five thousand, eight hundred forty-five".