12571773451 has 4 divisors (see below), whose sum is σ = 12573137304. Its totient is φ = 12570409600.

The previous prime is 12571773443. The next prime is 12571773463. The reversal of 12571773451 is 15437717521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15437717521 = 3121 ⋅4946401.

It is a cyclic number.

It is not a de Polignac number, because 12571773451 - 2³ = 12571773443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12571773398 and 12571773407.

It is not an unprimeable number, because it can be changed into a prime (12571773551) 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, 668005 + ... + 686566.

It is an arithmetic number, because the mean of its divisors is an integer number (3143284326).

Almost surely, 2^12571773451 is an apocalyptic number.

12571773451 is a deficient number, since it is larger than the sum of its proper divisors (1363853).

12571773451 is an equidigital number, since it uses as much as digits as its factorization.

12571773451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363852.

The product of its digits is 205800, while the sum is 43.

The spelling of 12571773451 in words is "twelve billion, five hundred seventy-one million, seven hundred seventy-three thousand, four hundred fifty-one".