1779309262081 has 48 divisors (see below), whose sum is σ = 2040176654208. Its totient is φ = 1542299616000.

The previous prime is 1779309262079. The next prime is 1779309262099. The reversal of 1779309262081 is 1802629039771.

It is a happy number.

It is not a de Polignac number, because 1779309262081 - 2¹ = 1779309262079 is a prime.

It is a super-2 number, since 2×1779309262081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1779309262981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 987955381 + ... + 987957181.

It is an arithmetic number, because the mean of its divisors is an integer number (42503680296).

Almost surely, 2^{1779309262081} is an apocalyptic number.

It is an amenable number.

1779309262081 is a deficient number, since it is larger than the sum of its proper divisors (260867392127).

1779309262081 is a wasteful number, since it uses less digits than its factorization.

1779309262081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3590 (or 3571 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 55.

The spelling of 1779309262081 in words is "one trillion, seven hundred seventy-nine billion, three hundred nine million, two hundred sixty-two thousand, eighty-one".