10920420815236 has 27 divisors (see below), whose sum is σ = 19259260462533. Its totient is φ = 5418099813360.

The previous prime is 10920420815219. The next prime is 10920420815237. The reversal of 10920420815236 is 63251802402901.

The square root of 10920420815236 is 3304606.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4609995468100 + 6310425347136 = 2147090^2 + 2512056^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10920420815192 and 10920420815201.

It is not an unprimeable number, because it can be changed into a prime (10920420815237) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 865800466 + ... + 865813078.

Almost surely, 2^{10920420815236} is an apocalyptic number.

10920420815236 is the 3304606-th square number.

It is an amenable number.

10920420815236 is a deficient number, since it is larger than the sum of its proper divisors (8338839647297).

10920420815236 is an frugal number, since it uses more digits than its factorization.

10920420815236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25492 (or 12746 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 10920420815236 in words is "ten trillion, nine hundred twenty billion, four hundred twenty million, eight hundred fifteen thousand, two hundred thirty-six".