10556001011 has 4 divisors (see below), whose sum is σ = 10611268224. Its totient is φ = 10500733800.

The previous prime is 10556000993. The next prime is 10556001023. The reversal of 10556001011 is 11010065501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10556001011 - 2⁶ = 10556000947 is a prime.

It is a super-2 number, since 2×10556001011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10556091011) 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, 27633320 + ... + 27633701.

It is an arithmetic number, because the mean of its divisors is an integer number (2652817056).

Almost surely, 2^10556001011 is an apocalyptic number.

10556001011 is a deficient number, since it is larger than the sum of its proper divisors (55267213).

10556001011 is an equidigital number, since it uses as much as digits as its factorization.

10556001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55267212.

The product of its (nonzero) digits is 150, while the sum is 20.

Adding to 10556001011 its reverse (11010065501), we get a palindrome (21566066512).

The spelling of 10556001011 in words is "ten billion, five hundred fifty-six million, one thousand, eleven".