10506211623 has 8 divisors (see below), whose sum is σ = 15564758000. Its totient is φ = 7004141064.

The previous prime is 10506211619. The next prime is 10506211637. The reversal of 10506211623 is 32611260501.

10506211623 is a `hidden beast` number, since 1 + 0 + 5 + 0 + 621 + 16 + 23 = 666.

It is not a de Polignac number, because 10506211623 - 2² = 10506211619 is a prime.

It is a super-2 number, since 2×10506211623² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 389118949 = 10506211623 / (1 + 0 + 5 + 0 + 6 + 2 + 1 + 1 + 6 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10506211613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194559448 + ... + 194559501.

It is an arithmetic number, because the mean of its divisors is an integer number (1945594750).

Almost surely, 2^10506211623 is an apocalyptic number.

10506211623 is a deficient number, since it is larger than the sum of its proper divisors (5058546377).

10506211623 is an equidigital number, since it uses as much as digits as its factorization.

10506211623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389118958 (or 389118952 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 10506211623 in words is "ten billion, five hundred six million, two hundred eleven thousand, six hundred twenty-three".