20415523036452 has 48 divisors (see below), whose sum is σ = 47649610374912. Its totient is φ = 6803261812480.

The previous prime is 20415523036439. The next prime is 20415523036529. The reversal of 20415523036452 is 25463032551402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1002864658 + ... + 1002885014.

It is an arithmetic number, because the mean of its divisors is an integer number (992700216144).

Almost surely, 2^{20415523036452} is an apocalyptic number.

It is an amenable number.

20415523036452 is an abundant number, since it is smaller than the sum of its proper divisors (27234087338460).

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

20415523036452 is a wasteful number, since it uses less digits than its factorization.

20415523036452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39748 (or 39746 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 42.

Adding to 20415523036452 its reverse (25463032551402), we get a palindrome (45878555587854).

The spelling of 20415523036452 in words is "twenty trillion, four hundred fifteen billion, five hundred twenty-three million, thirty-six thousand, four hundred fifty-two".