10420120544550 has 48 divisors (see below), whose sum is σ = 25859857720320. Its totient is φ = 2776767761440.

The previous prime is 10420120544489. The next prime is 10420120544621. The reversal of 10420120544550 is 5544502102401.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23921562 + ... + 24353261.

It is an arithmetic number, because the mean of its divisors is an integer number (538747035840).

Almost surely, 2^{10420120544550} is an apocalyptic number.

10420120544550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10420120544550 is an abundant number, since it is smaller than the sum of its proper divisors (15439737175770).

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

10420120544550 is a wasteful number, since it uses less digits than its factorization.

10420120544550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48276277 (or 48276272 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 33.

Adding to 10420120544550 its reverse (5544502102401), we get a palindrome (15964622646951).

The spelling of 10420120544550 in words is "ten trillion, four hundred twenty billion, one hundred twenty million, five hundred forty-four thousand, five hundred fifty".