3749776779473 has 4 divisors (see below), whose sum is σ = 3749859929508. Its totient is φ = 3749693629440.

The previous prime is 3749776779439. The next prime is 3749776779479.

3749776779473 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 118358705089 + 3631418074384 = 344033^2 + 1905628^2 .

It is a cyclic number.

It is not a de Polignac number, because 3749776779473 - 2⁶ = 3749776779409 is a prime.

It is a super-3 number, since 3×3749776779473³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3749776779479) 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, 41507336 + ... + 41597577.

It is an arithmetic number, because the mean of its divisors is an integer number (937464982377).

Almost surely, 2^{3749776779473} is an apocalyptic number.

It is an amenable number.

3749776779473 is a deficient number, since it is larger than the sum of its proper divisors (83150035).

3749776779473 is an equidigital number, since it uses as much as digits as its factorization.

3749776779473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83150034.

The product of its digits is 8233547616, while the sum is 80.

The spelling of 3749776779473 in words is "three trillion, seven hundred forty-nine billion, seven hundred seventy-six million, seven hundred seventy-nine thousand, four hundred seventy-three".