3977773317523 has 8 divisors (see below), whose sum is σ = 4075701716016. Its totient is φ = 3879888230400.

The previous prime is 3977773317493. The next prime is 3977773317599. The reversal of 3977773317523 is 3257133777793.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3977773317523 - 2¹³ = 3977773309331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3977773312523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10641861 + ... + 11009302.

It is an arithmetic number, because the mean of its divisors is an integer number (509462714502).

Almost surely, 2^{3977773317523} is an apocalyptic number.

3977773317523 is a deficient number, since it is larger than the sum of its proper divisors (97928398493).

3977773317523 is a wasteful number, since it uses less digits than its factorization.

3977773317523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21655685.

The product of its digits is 122523030, while the sum is 64.

The spelling of 3977773317523 in words is "three trillion, nine hundred seventy-seven billion, seven hundred seventy-three million, three hundred seventeen thousand, five hundred twenty-three".