3871453521573 has 48 divisors (see below), whose sum is σ = 6145803623232. Its totient is φ = 2328904800000.

The previous prime is 3871453521571. The next prime is 3871453521577. The reversal of 3871453521573 is 3751253541783.

3871453521573 is a `hidden beast` number, since 3 + 8 + 7 + 1 + 45 + 3 + 5 + 21 + 573 = 666.

It is not a de Polignac number, because 3871453521573 - 2¹ = 3871453521571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3871453521571) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 146073823 + ... + 146100323.

It is an arithmetic number, because the mean of its divisors is an integer number (128037575484).

Almost surely, 2^{3871453521573} is an apocalyptic number.

3871453521573 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3871453521573 is a deficient number, since it is larger than the sum of its proper divisors (2274350101659).

3871453521573 is a wasteful number, since it uses less digits than its factorization.

3871453521573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37426 (or 37423 counting only the distinct ones).

The product of its digits is 10584000, while the sum is 54.

The spelling of 3871453521573 in words is "three trillion, eight hundred seventy-one billion, four hundred fifty-three million, five hundred twenty-one thousand, five hundred seventy-three".