105649764791 has 4 divisors (see below), whose sum is σ = 105717534000. Its totient is φ = 105581995584.

The previous prime is 105649764769. The next prime is 105649764797. The reversal of 105649764791 is 197467946501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 197467946501 = 7 ⋅28209706643.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105649764791 is a prime.

It is a super-2 number, since 2×105649764791² (a number of 23 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 105649764791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105649764797) 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, 33882266 + ... + 33885383.

It is an arithmetic number, because the mean of its divisors is an integer number (26429383500).

Almost surely, 2^105649764791 is an apocalyptic number.

105649764791 is a deficient number, since it is larger than the sum of its proper divisors (67769209).

105649764791 is an equidigital number, since it uses as much as digits as its factorization.

105649764791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67769208.

The product of its (nonzero) digits is 11430720, while the sum is 59.

The spelling of 105649764791 in words is "one hundred five billion, six hundred forty-nine million, seven hundred sixty-four thousand, seven hundred ninety-one".