3920408473557 has 16 divisors (see below), whose sum is σ = 5253166096640. Its totient is φ = 2600645875200.

The previous prime is 3920408473549. The next prime is 3920408473559. The reversal of 3920408473557 is 7553748040293.

It is not a de Polignac number, because 3920408473557 - 2³ = 3920408473549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3920408473497 and 3920408473506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3920408473559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1312432 + ... + 3092457.

It is an arithmetic number, because the mean of its divisors is an integer number (328322881040).

Almost surely, 2^{3920408473557} is an apocalyptic number.

It is an amenable number.

3920408473557 is a deficient number, since it is larger than the sum of its proper divisors (1332757623083).

3920408473557 is a wasteful number, since it uses less digits than its factorization.

3920408473557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4406364.

The product of its (nonzero) digits is 25401600, while the sum is 57.

The spelling of 3920408473557 in words is "three trillion, nine hundred twenty billion, four hundred eight million, four hundred seventy-three thousand, five hundred fifty-seven".