20045451045502 has 8 divisors (see below), whose sum is σ = 30077001989856. Its totient is φ = 10019783715552.

The previous prime is 20045451045481. The next prime is 20045451045517. The reversal of 20045451045502 is 20554015454002.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1470895083 + ... + 1470908710.

It is an arithmetic number, because the mean of its divisors is an integer number (3759625248732).

Almost surely, 2^{20045451045502} is an apocalyptic number.

20045451045502 is a deficient number, since it is larger than the sum of its proper divisors (10031550944354).

20045451045502 is a wasteful number, since it uses less digits than its factorization.

20045451045502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2941807202.

The product of its (nonzero) digits is 160000, while the sum is 37.

Adding to 20045451045502 its reverse (20554015454002), we get a palindrome (40599466499504).

The spelling of 20045451045502 in words is "twenty trillion, forty-five billion, four hundred fifty-one million, forty-five thousand, five hundred two".