3777040743661 has 4 divisors (see below), whose sum is σ = 3777157889824. Its totient is φ = 3776923597500.

The previous prime is 3777040743631. The next prime is 3777040743689. The reversal of 3777040743661 is 1663470407773.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 3777040743661 - 2¹⁷ = 3777040612589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3777040743631) 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, 58524705 + ... + 58589206.

It is an arithmetic number, because the mean of its divisors is an integer number (944289472456).

Almost surely, 2^{3777040743661} is an apocalyptic number.

It is an amenable number.

3777040743661 is a deficient number, since it is larger than the sum of its proper divisors (117146163).

3777040743661 is a wasteful number, since it uses less digits than its factorization.

3777040743661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117146162.

The product of its (nonzero) digits is 12446784, while the sum is 55.

The spelling of 3777040743661 in words is "three trillion, seven hundred seventy-seven billion, forty million, seven hundred forty-three thousand, six hundred sixty-one".