12542215400522 has 8 divisors (see below), whose sum is σ = 18879801275136. Its totient is φ = 6248948308812.

The previous prime is 12542215400501. The next prime is 12542215400527. The reversal of 12542215400522 is 22500451224521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12542215400527) 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, 11079695018 + ... + 11079696149.

It is an arithmetic number, because the mean of its divisors is an integer number (2359975159392).

Almost surely, 2^{12542215400522} is an apocalyptic number.

12542215400522 is a deficient number, since it is larger than the sum of its proper divisors (6337585874614).

12542215400522 is a wasteful number, since it uses less digits than its factorization.

12542215400522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22159391452.

The product of its (nonzero) digits is 64000, while the sum is 35.

The spelling of 12542215400522 in words is "twelve trillion, five hundred forty-two billion, two hundred fifteen million, four hundred thousand, five hundred twenty-two".