20125471063242 has 96 divisors (see below), whose sum is σ = 43583267021760. Its totient is φ = 6192399306240.

The previous prime is 20125471063219. The next prime is 20125471063259. The reversal of 20125471063242 is 24236017452102.

It is a self number, because there is not a number n which added to its sum of digits gives 20125471063242.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13743892 + ... + 15137552.

It is an arithmetic number, because the mean of its divisors is an integer number (453992364810).

Almost surely, 2^{20125471063242} is an apocalyptic number.

20125471063242 is an abundant number, since it is smaller than the sum of its proper divisors (23457795958518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20125471063242 is a wasteful number, since it uses less digits than its factorization.

20125471063242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393876 (or 1393857 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 20125471063242 in words is "twenty trillion, one hundred twenty-five billion, four hundred seventy-one million, sixty-three thousand, two hundred forty-two".