12542220476 has 6 divisors (see below), whose sum is σ = 21948885840. Its totient is φ = 6271110236.

The previous prime is 12542220451. The next prime is 12542220499. The reversal of 12542220476 is 67402224521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1567777556 + ... + 1567777563.

It is an arithmetic number, because the mean of its divisors is an integer number (3658147640).

Almost surely, 2^12542220476 is an apocalyptic number.

It is an amenable number.

12542220476 is a deficient number, since it is larger than the sum of its proper divisors (9406665364).

12542220476 is a wasteful number, since it uses less digits than its factorization.

12542220476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135555123 (or 3135555121 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

Adding to 12542220476 its reverse (67402224521), we get a palindrome (79944444997).

The spelling of 12542220476 in words is "twelve billion, five hundred forty-two million, two hundred twenty thousand, four hundred seventy-six".