10420120544547 has 16 divisors (see below), whose sum is σ = 15886684638720. Its totient is φ = 5951202454272.

The previous prime is 10420120544489. The next prime is 10420120544621. The reversal of 10420120544547 is 74544502102401.

It is not a de Polignac number, because 10420120544547 - 2¹⁴ = 10420120528163 is a prime.

It is a super-2 number, since 2×10420120544547² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10420120544447) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 131298663 + ... + 131378000.

It is an arithmetic number, because the mean of its divisors is an integer number (992917789920).

Almost surely, 2^{10420120544547} is an apocalyptic number.

10420120544547 is a deficient number, since it is larger than the sum of its proper divisors (5466564094173).

10420120544547 is a wasteful number, since it uses less digits than its factorization.

10420120544547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262678562.

The product of its (nonzero) digits is 179200, while the sum is 39.

Adding to 10420120544547 its reverse (74544502102401), we get a palindrome (84964622646948).

The spelling of 10420120544547 in words is "ten trillion, four hundred twenty billion, one hundred twenty million, five hundred forty-four thousand, five hundred forty-seven".