105670499621 has 2 divisors, whose sum is σ = 105670499622. Its totient is φ = 105670499620.

The previous prime is 105670499611. The next prime is 105670499629. The reversal of 105670499621 is 126994076501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87530181025 + 18140318596 = 295855^2 + 134686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105670499621 is a prime.

It is a super-2 number, since 2×105670499621² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105670499621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105670499629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52835249810 + 52835249811.

It is an arithmetic number, because the mean of its divisors is an integer number (52835249811).

Almost surely, 2^105670499621 is an apocalyptic number.

It is an amenable number.

105670499621 is a deficient number, since it is larger than the sum of its proper divisors (1).

105670499621 is an equidigital number, since it uses as much as digits as its factorization.

105670499621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 105670499621 in words is "one hundred five billion, six hundred seventy million, four hundred ninety-nine thousand, six hundred twenty-one".