10186779081 has 4 divisors (see below), whose sum is σ = 13582372112. Its totient is φ = 6791186052.

The previous prime is 10186779079. The next prime is 10186779089. The reversal of 10186779081 is 18097768101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10186779081 - 2¹ = 10186779079 is a prime.

It is a super-2 number, since 2×10186779081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10186779081.

It is not an unprimeable number, because it can be changed into a prime (10186779089) 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, 1697796511 + ... + 1697796516.

It is an arithmetic number, because the mean of its divisors is an integer number (3395593028).

Almost surely, 2^10186779081 is an apocalyptic number.

It is an amenable number.

10186779081 is a deficient number, since it is larger than the sum of its proper divisors (3395593031).

10186779081 is an equidigital number, since it uses as much as digits as its factorization.

10186779081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395593030.

The product of its (nonzero) digits is 169344, while the sum is 48.

The spelling of 10186779081 in words is "ten billion, one hundred eighty-six million, seven hundred seventy-nine thousand, eighty-one".