38731345521573 has 4 divisors (see below), whose sum is σ = 51641794028768. Its totient is φ = 25820897014380.

The previous prime is 38731345521551. The next prime is 38731345521709. The reversal of 38731345521573 is 37512554313783.

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 38731345521573 - 2³⁶ = 38662626044837 is a prime.

It is a super-2 number, since 2×38731345521573² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38731345520573) 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, 6455224253593 + ... + 6455224253598.

It is an arithmetic number, because the mean of its divisors is an integer number (12910448507192).

Almost surely, 2^{38731345521573} is an apocalyptic number.

It is an amenable number.

38731345521573 is a deficient number, since it is larger than the sum of its proper divisors (12910448507195).

38731345521573 is a wasteful number, since it uses less digits than its factorization.

38731345521573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12910448507194.

The product of its digits is 31752000, while the sum is 57.

The spelling of 38731345521573 in words is "thirty-eight trillion, seven hundred thirty-one billion, three hundred forty-five million, five hundred twenty-one thousand, five hundred seventy-three".