56606021011 has 4 divisors (see below), whose sum is σ = 58557952800. Its totient is φ = 54654089224.

The previous prime is 56606020967. The next prime is 56606021041. The reversal of 56606021011 is 11012060665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11012060665 = 5 ⋅2202412133.

It is a cyclic number.

It is not a de Polignac number, because 56606021011 - 2¹⁹ = 56605496723 is a prime.

It is a super-2 number, since 2×56606021011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56606021041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975965851 + ... + 975965908.

It is an arithmetic number, because the mean of its divisors is an integer number (14639488200).

Almost surely, 2^56606021011 is an apocalyptic number.

56606021011 is a deficient number, since it is larger than the sum of its proper divisors (1951931789).

56606021011 is a wasteful number, since it uses less digits than its factorization.

56606021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951931788.

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 56606021011 its reverse (11012060665), we get a palindrome (67618081676).

The spelling of 56606021011 in words is "fifty-six billion, six hundred six million, twenty-one thousand, eleven".